How To Get Rid of Blackheads

What can you tell me about the new Zeno acne device?

I have a lot of acne and i wanted to try the new Zeno. does it work? It costs a lot of money so before i spend 150$ on it i wanted to ask around and see if anyone has ever tried it.
how does it work? is it bad for your skin?

ive never tried it, but i saw a news thing about it on t.v. 5 different people all with acne tried it for a week, and it did work for most of them, although it only minimized a few pimples. the people said that ultimitly they think that pimple cream worked just the same.

i mean, all it realy does is heat to ur skin. no scientific break through.

Zeno MD Acne Clearing Device $175 Unexpected breakouts have met their match. The Zeno MD Acne Clearing Device provides the most advanced, physician-strength heat treatment available. Zeno is a hand-held battery-operated device with a tip that delivers heat directly into a clogged pore. This heat quickly kills the bacteria within the pimple, reducing inflammation and speeding healing.

Zeno Pro Acne Clearing Device - Pink $159 Just because acne is ugly, doesn't mean your acne treatment has to be. The stylish Zeno Pro is pretty in pink and equipped to provide 90 pimple-killing treatments. The hand-held battery-operated device features a tip that delivers controlled heat directly into a clogged pore. This heat quickly kills the bacteria within the pimple, reducing inflammation and speeding healing. Your Zeno batteries must be charged for 6 hours before initial use. For safety reasons, Zeno will not operate when plugged into the Wall Charging Plug. In order to charge battery, it must be plugged into an outlet. Make sure battery is charged by looking at the battery charge indicator.

Zeno Pro 90 Count Replacement Tip $35 Keep the acne clearing power flowing with a Zeno Refill Tip. Created specifically for the Zeno Pro, this tip provides 90 treatments. Please Note: The Zeno Pro Replacement Tips can only be used in the Zeno Pro Device and the Zeno MD Replacement Tips can only be used in the Zeno MD device.

Zeno PRO (1 piece) $159 Zeno Pro is a revolutionary approach to acne care. This hand-held device, the size of a cell phone, features a sleek design in a stylish pink color. This mechanism uses heat therapy to eliminate the bacteria that cause pimples, giving you a new means to clear skin. Zeno Pro uses a small metal pad to apply a precisely controlled heat dose directly to the pimple, killing the bacteria that fester in clogged pores and cause the blemish. In an FDA-reviewed, controlled clinical trial, Zeno faded 90% of blemishes within 24 hours. Zeno's electronic system emits the exact dosage for the exact time - all you have to do is apply it to your blemishes. Zeno Pro can clear a pimple in a matter of hours. Two to three 2½-minute treatments over a 24 hour period are sufficient for most pimples. Many are eliminated after just one treatment. Most other acne treatments take days or weeks for visible results. And other than a slight temporary redness, Zeno has no side effects common among acne treatments, such as sensitivity to sunlight. Zeno Pro's heat therapy tip provides 90 treatment cycles, enough to keep your skin clear for months. The new Zeno Pro also includes a sleek storage case and battery charger.

Zeno MD (1 piece) $175 Zeno MD is a revolutionary approach to acne care. This hand-held device, the size of a cell phone, features a sleek design in a stylish white color. This mechanism uses heat therapy to eliminate the bacteria that cause pimples, giving you a new means to clear skin. Zeno MD uses a small metal pad to apply a precisely controlled heat dose directly to the pimple, killing the bacteria that fester in clogged pores and cause the blemish. In an FDA-reviewed, controlled clinical trial, Zeno faded 90% of blemishes within 24 hours. Zeno's electronic system emits the exact dosage for the exact time - all you have to do is apply it to your blemishes. Zeno MD can clear a pimple in a matter of hours. Two to three 2½-minute treatments over a 24 hour period are sufficient for most pimples. Many are eliminated after just one treatment. Most other acne treatments take days or weeks for visible results. And other than a slight temporary redness, Zeno has no side effects common among acne treatments, such as sensitivity to sunlight. Zeno MD's heat therapy tip provides 150 treatment cycles, enough to keep your skin clear for months. The new Zeno MD also includes a sleek storage case and battery charger.

Zeno Pro Replacement Tip Cartridge $36 $15 off $75 for New Customers. Use Code NEW15- Replacement Tip Cartridge: 90 treatment cyclesZeno™ is a clinically proven acne clearing device used to treat mild to moderate individual acne pimples.Package contains:One 90 Cycle Treatment Tip CartridgeReplacing the Zeno Treatment Tip CartridgeThe Zeno Treatment Tip Cartridge is programmed with a specific number of treatment cycles, indicated by the number inscribed onto the top of the cartridge.Once the treatment cycles have been exhausted, the Treatment Tip must be replaced.

Zeno Pro Replacement Tip Cartridge $25 $15 off $75 for New Customers. Use Code NEW15- Tip Cartridge: 60 treatment cyclesZeno™ is a clinically proven acne clearing device used to treat mild to moderate individual acne pimples.Package contains:One 60 Cycle Treatment Tip CartridgeReplacing the Zeno Treatment Tip CartridgeThe Zeno Treatment Tip Cartridge is programmed with a specific number of treatment cycles, indicated by the number inscribed onto the top of the cartridge.Once the treatment cycles have been exhausted, the Treatment Tip must be replaced.

Zeno Mini Replacement Tip Cartridge $19 $15 off $75 for New Customers. Use Code NEW15- Zeno Mini Replacement Tip Cartridge is to be used only with the Zeno Mini Acne Clearing Device. It's programmed with a specific number of treatment cycles, indicated by the number inscribed onto the top of the cartridge.Once the treatment cycles have been exhausted, the Treatment Tip must be replaced.Benefits:The Replacement Tip Cartridge is programmed to deliver the right amount of energy to the pimpleIt can only be used with Zeno MiniTip must be replaced after 45 treatment cycles. International Customers - Zeno products cannot be shipped outside the U.S. or Canada due to converter adaptability issues.

Zeno MD 150 Count Replacement Tip $55 Keep the acne clearing power flowing with a Zeno Refill Tip. Created specifically for the Zeno MD, this tip provides 150 treatments, the most advanced, physician-quality usage available. Please Note: The Zeno Pro Replacement Tips can only be used in the Zeno Pro Device and the Zeno MD Replacement Tips can only be used in the Zeno MD device.

Zeno Replacement Tip Cartridge - MD Series (1 piece) $55 Each Zeno tip is good for 120 treatment cycles, enough to eliminate at least 40 pimples. Each tip has a set lifespan, and lets you know when it's time for a replacement. Because Zeno kills the bacteria that cause acne, it is safe to use repeatedly. However, over time, the metal plate within the Zeno tip begins to wear out. The Replacement Tip Cartridge keeps your Zeno working hard to keep your skin pimple-free. Please note that this replacement tip is compatible with Zeno MD only.

Zeno Replacement Tip Cartridge - PRO Series (1 piece) $25 Each Zeno tip is good for 90 treatment cycles, enough to eliminate at least 30 pimples. Each tip has a set lifespan, and lets you know when it's time for a replacement. Because Zeno kills the bacteria that cause acne, it is safe to use repeatedly. However, over time, the metal plate within the Zeno tip begins to wear out. The Replacement Tip Cartridge keeps your Zeno working hard to keep your skin pimple-free. Please note that this replacement tip is compatible with Zeno PRO only.

Zeno Hot Spot Pink $39.99 $15 off $75 for New Customers. Use Code NEW15- Zeno Hot Spot Options Zeno Hot Spot Pink Zeno Hot Spot BlueFDA-approved, dermatologist-recommended, and completely safe and gentle on the skin, the Zeno Hot Spot is the most effective blemish-clearing device on the market. Based on the results from a clinical trial, the Zeno Hot Spot provides visible blemish clearing within just one hour and eliminates or significantly reduces ninety percent of blemishes within twenty-four hours.The Zeno Hot Spot works by using the company's proprietary, thermal-based ClearPoint™ technology to kill the bacteria that causes blemishes to occur. New to the Zeno Hot Spot is a mechanism that enables the device to heat up within seconds to a comfortable temperature of approximately 118 degrees with the simple touch of a button.

Zeno Hot Spot Blue $39.99 $15 off $75 for New Customers. Use Code NEW15- Zeno Hot Spot Options Zeno Hot Spot Pink Zeno Hot Spot BlueFDA-approved, dermatologist-recommended, and completely safe and gentle on the skin, the Zeno Hot Spot is the most effective blemish-clearing device on the market. Based on the results from a clinical trial, the Zeno Hot Spot provides visible blemish clearing within just one hour and eliminates or significantly reduces ninety percent of blemishes within twenty-four hours.The Zeno Hot Spot works by using the company's proprietary, thermal-based ClearPoint™ technology to kill the bacteria that causes blemishes to occur. New to the Zeno Hot Spot is a mechanism that enables the device to heat up within seconds to a comfortable temperature of approximately 118 degrees with the simple touch of a button.

DDF Acne Scrub $35 Free Shipping on orders Over $49. DDF Acne Scrub is a cleanser and exfoliant in one that powers out grime and oil to clear and refine the skin.Although it contains powerful acne fighters, DDF Acne Scrub doesn’t dry the skin or leave a nasty medicinal smell.- Gina Pumice Acne Scrub is a highly effective foaming cleanser for the treatment of acne, razor bumps and rough, oily skin of the face and body. This blend of fine polyethylene beads and an active blemish inhibitor helps reduce clogged pores promote clearer skin. DDF Acne Scrub exfoliates and smoothes dull-looking skin.DDF Acne Scrub Benefits:Helps unclog poresHelps reduce and prevent acne blemishesPromotes clear skin

Neutrogena On the Spot Acne Treatment $6 Free Shipping on orders Over $49. Allure Best of BeautyCategory: Best of Skin – Zit CreamNeutrogena On-the-Spot Acne Treatment is a prescription-strength acne treatment that won't dry out your face. It goes deep down in pores to kill the acne bacteria that cause pimples and helps stop new ones from forming.Some medicated spot treatments contain high doses of Benzoyl Peroxide that can irritate skin, causing redness and dryness that can make acne worse. On-the-Spot Acne Treatment contains just 2.5% Benzoyl Peroxide, yet it provides the same maximum level of effectiveness as a conventional 10% prescription. Less Benzoyl Peroxide means less irritation.Fight acne with a prescription-strength acne spot treatment that won't dry out your face.Benefits:Oil-freeNon-comedogenic (won't clog pores)

Menscience Acne Spot Repair $21 $15 off $75 for New Customers. Use Code NEW15- A prescription-grade acne treatment that rapidly eliminates acne breakouts and helps repair blemished skin. This Spot Repair contains the highest concentration of Benzoyl Peroxide (10%) and soothing, repairing ingredients like Green Tea, Allantoin, Urea and Vitamin E. The fast-absorbing, invisible application targets existing acne and reduces inflammation and redness, while providing immediate visible results.Benefits:Utilizes the most effective prescription-grade acne medicine to eliminate breakouts in 24-48 hours.Helps diminish redness and inflammation associated with acne.Heals and repairs acne-stressed skin.Rinses away fast and clean. Softens and hydrates for healthy skin.

Menscience Acne Therapy Lotion $28 $15 off $75 for New Customers. Use Code NEW15- This pharmaceutical-grade, ultralight and fast-absorbing lotion uses the most effective acne treatment medicine prescribed by doctors (Benzoyl Peroxide) to prevent and control breakouts. The unique formula also provides Green Tea, Allantoin, Panthenol and Urea to help soothe acne-stressed skin and improve skin’s appearance for immediate and long-term results.Benefits:Utilizes a 3 % concentration of the most effective prescription-grade medicine (Benzoyl Peroxide) to maintain skin and prevent breakouts.Helps combat inflammation associated with acne and soothes stressed skin.Helps repair acne scarring and heal acne-damaged skin.Fast-absorbing invisible application.

SkinMedica Acne System $100 SkinMedica Acne System employs natural, therapeutic antiseptics to destroy bacteria, clean deeply, speed healing, and reduce breakouts on blemish-prone or troubled skin. System includes: Acne Treatment Foaming Wash (5 fl. oz.), Acne Treatment Toner (6 fl. oz.), and Acne Treatment Lotion (2 fl. oz.).

Murad Acne and Wrinkle Reducer $58 FREE Summer Protect Kit with any $49 Murad purchase--Clinically proven dual-function formula reduces acne while minimizing fine lines and wrinkles. Kombucha Collagen Defense™ stimulates collagen production while significantly diminishing its breakdown. With optimal collagen levels restored, skin regains a healthy resilience, fullness and improved barrier function strength. Benefits:Marine Kelp Extract provides instant lifting and firming.Willow Bark Extract, Silver and encapsulated Salicylic Acid constitute a multi-active acne-fighting system that penetrates deep to clear acne and eliminate breakouts.

Glytone Acne Gel $18 FREE 5 pack of Sunbands with purchase of Glytone SPF 30 or SPF 40--This acne gel uses a 10% benzoyl peroxide to help control surface oil and neutralize p. acnes bacteria on the skin.

B Kamins Starter Kit Acne $50 Free Shipping on orders Over $49. B. Kamins Starter Kit Acne contains:Hydrating Acne Wash2 fl. oz / 60 mlMedicated Acne Gel 5%1 oz / 30 gDay Lotion SPF 150.5 oz / 15 gDiatomamus Earth Masque (oily or combination skin)0.5 oz / 15 g

Belli Acne Clearing Facial Wash $22 $15 off $75 for New Customers. Use Code NEW15- Most acne treatments are contra-indicated during pregnancy because of adverse effects to baby. Belli’s breakthrough formulation is the first to safely address pregnancy-related acne using lactic acid – an ingredient that is naturally found in the body.Belli Acne Clearing Facial Wash is an exfoliating wash; rich in powerful acne-ridding ingredients that leaves skin clear and refined, without over-drying. The safest acne solution for pregnancy, Belli Acne Clearing Facial Wash uses hydroxyacid to lift away dirt, oil and bacteria, promoting clean and blemish-free skin. All Belli products are 100% free of phthalates.

Celazome OPlex Acne Treatment System $98 $15 off $75 for New Customers. Use Code NEW15- Proprietary Origanum Complex offers amazing results with problematic and acne-prone skin. The three-product O·PLEX System is non-irritating and non-drying. The Origanum Complex helps inhibit acne bacteria while retexturizing skin's surface. O·PLEX Mist and O·PLEX Control use Lyphazomes to deliver Origanum Complex with long-lasting Hydration.O·PLEX Wash thoroughly lifts impurities and removes excess sebum. Origanum's antibacterial properties help target acne conditions.O·PLEX Mist helps balance sebum production and tighten and refine pores. Origanum's antibacterial properties help target acne conditions.O·PLEX Control treats acne. Clears up existing acne blemishes and allows skin to heal. Helps prevent new acne from forming.For individuals with problematic and acne skin or oily skin.

ARCONA AM Acne Lotion $38 $15 off $75 for New Customers. Use Code NEW15- This product meets our natural beauty standards with a high concentration of quality natural botanicals while keeping harsh chemicals to a minimum.This antibacterial lotion, for adolescent and adult acne, clears acne lesions, reduces inflammation and prevents the formation of comedones.Benefits:Combats skin eruptions and kills bacteria.Helps to unclog pores with Salicylic Acid.Reduces inflammation with Manuka Extract.Recommended for oily and problem prone skin.

Murad Acne & Wrinkle Reducer $58 Reduce acne and fine lines with the clinically proven dual-action formula of Murad's Acne & Wrinkle Reducer. Optimal collagen levels are restored through the Kombucha Collagen Defenseâ„¢ to smooth the appearance of fine lines and wrinkles, while Salicylic Acid works to clear acne.

Murad Acne Body Wash $39.45 Control breakouts on the face and body. Murad Acne Body Wash combines the best of natural exfoliants with gentle, but effective acne fighting ingredients to control and prevent body breakouts. The patented delivery system provides for maximum acne fighting performance.

Murad Acne Spot Treatment $17.5 Blemishes cannot stand up to a product like this. Murad Acne Spot Treatment uses a fast-acting formula to minimize the severity and appearance of current breakouts. The unique combination of acne-fighting ingredients serve to eliminate acne and soothe the skin at the same time.

Glytone Acne Treatment Kit $72.8 The Glytone Acne Treatment Kit contains three products designed to work together effectively to help maintain healthy skin for individuals with acne-prone skin. Daily use of the products on the face, chest or back will safely and gently help reduce acne blemishes and control breakouts. The kit contains: Cleansing Gel (6.7oz)- Designed to adjust the pH of your skin and help rid your skin of dead cells. Acne Treatment Toner (8oz)- a medicated toner containing salicylic acid, works as an effective agent to breakdown acne and remove excessive oils. 10% Benzoyl Peroxide Acne Treatment Gel (2oz)- A maximum strength OTC.

Acne Lotion (1.8 oz.) $27 Kill acne-causing bacteria before it wreaks havoc on your skin with Clearogen Acne Lotion. The lightweight cream uses 2.5% benzoyl peroxide to clear away existing acne and prevent future breakouts. Aloe and green tea soothe redness and irritation while peppermint leaf extract cools and comforts the skin.

SkinMedica Acne Treatment Lotion $50 Are you sick of simply bearing with unsightly skin? Heal and treat your complexion with Skin Medica Acne Treatment Lotion. It's a lightweight formula designed with the most powerful acne-fighting ingredients to reduce breakouts and promote healthier skin.

DermaNew Acne Active Hydrator $34 Hydrate and heal your acne-prone complexion. DermaNew Acne Active Hydrator is a completely calming formula of soothing hydrators and brighteners that give skin back its healthy glow without it ever becoming oily or uncomfortable.

DDF Acne Control Treatment $42 Battle acne without battling your skin. DDF Acne Control Treatment clears and purifies the pores without being harsh or damaging to the skin. Non-Comedogenic skin conditioners hydrate and soothe the skin for a calm, clean face.

Neova Acne Cream $32 Neova Acne Cream is formulated to not only kill bacteria on the skin, but keep it exfoliated and calm at the same time. Your skin won't be dried out and flaky like with some other acne treatment products.

Solvere Acne Clearing Gel $11.95 A specialized prepared moisturizing gel base delivers the comedolytic and keratolytic acne treatment benefits of benzoyl peroxide 2.5%. In clinical studies benzoyl peroxide has been shown to fight P. acne and to assist in preventing bacterial resistance.

Glytone Acne Facial Masque $22 This high quality clay mask absorbs excess facial oil and penetrates pores, helping to control acne blemishes, acne pimples, blackheads and whiteheads. Helps keep skin clear, preventing future breakouts.

Summers Lab Rezamid Acne Lotion $32 $15 off $75 for New Customers. Use Code NEW15- Let's face it. Most acne products don't cover up so you look lousy while you heal. Others cover up but look worse than the pimple. Now there's a treatment that's different: Rezamid.Rezamid goes to work on pustular acne, more notoriously known as whiteheads." What's more, it's a potent acne medication that can be tint adjusted to your skin tone for an excellent cover up. So don't let acne get in the way of your day-to-day activities. Now you can cover up and treat pustular acne with a proven dermatologist recommended product: Rezamid."

Glytone Flesh Tinted Acne Treatment Lotion $18 Glytone Flesh Tinted Acne Treatment Lotion penetrates pores to control acne blemishes, acne pimples, blackheads and white heads. Helps keep skin clear of new acne blemishes, acne pimples, blackheads and white heads.

Glytone Acne Cleansing Toner $16 FREE 5 pack of Sunbands with purchase of Glytone SPF 30 or SPF 40--This toner combines the cleansing properties of water, alcohol and acetone with the acne fighting properties of 2% salicylic acid.Benefits:Penetrates pores to control acne.Helps to prevent new blemishes from forming.

Glytone Acne Facial Masque $22 FREE 5 pack of Sunbands with purchase of Glytone SPF 30 or SPF 40--This intense acne facial masque contains 6.4% sulfur to help dramatically diminish excess oil, deep cleanse clogged pores and help minimize breakouts.

Acne System (3 piece) $100 Keep oily and acne-prone skin calm and clear with this comprehensive regimen from SkinMedica. Each step helps to eliminate the primary causes of acne breakouts, including excess bacteria, clogged pores and over-active oil glands. With daily use, you'll see a decrease in pimples, pustules, redness and dryness, with a clearer, calmer complexion. SkinMedica Acne System includes: Acne Treatment Foaming Wash (5 fl oz) - using salicylic acid Acne Treatment Toner (6 fl oz) - this purifying astringent soothes the skin while helping bring balance to overly oily skin Acne Treatment Lotion (2 oz) - formulated with benzoyl peroxide, this therapeutic lotion helps eliminate the acne-causing bacteria from the skin for fewer breakouts*Due to a manufacturer packaging change, item received may vary from photograph.

Anthony Logistics For Men Acne Cleanser $22 Keep skin clear of unsightly acne and blemishes with Anthony Logistics For Men Acne Cleanser. The lightweight, refreshing formula uses powerful acne-fighting ingredients in a skin-soothing formula for brighter, softer, and smoother skin.

Anthony Logistics For Men Acne Cleanser $22 Keep skin clear of unsightly acne and blemishes with Anthony Logistics For Men Acne Cleanser. The lightweight, refreshing formula uses powerful acne-fighting ingredients in a skin-soothing formula for brighter, softer, and smoother skin.

Stiefel PanOxyl Acne Facial Wash $10 $15 off $75 for New Customers. Use Code NEW15- Welcome WebDerm CustomersBuy a dozen and get a 15% discount - Stiefel PanOxyl Acne Facial Wash 12 PackUncover the real you with PanOxyl Acne Facial Wash. The rich, elegant lather of PanOxyl Acne Facial Wash gently removes dirt and excess oil to cleanse and unclog pores on the face, while additional moisturizing ingredients help to rehydrate the skin.Benefits:Treats and prevents acne blemishes.2.5% Benzoyl Peroxide is used to kill acne causing bacteria.Soap free and pH balanced.Directions For Use:Wet area to be cleansed. Apply acne wash and gently massage area for 1-2 minutes. Rinse thoroughly and pat dry. Start with 1 application daily, then gradually increase to 2 or 3 times daily if needed.

Glytone Acne Treatment Facial Cleanser $28 FREE 5 pack of Sunbands with purchase of Glytone SPF 30 or SPF 40--This anti-acne foaming cleanser, for daily usage, contains 2% salicylic acid to help fight off blemishes.Benefits:Cleanses skin of impurities.Penetrates pores to control acne blemishes, blackheads and whiteheads.Recommended for oily skin types.

Zeno Hot Spot (1 piece) $39.99 Stop pimples at the source with Zeno Hot Spot, a heated blemish eliminating device. This ingenious hand-held device gently delivers optimal heat to the pimple and can reduce the size in just 1 hour, with a 90% blemish disappearance within 24 hours. This patented technology is safe for daily treatment, with 80 uses. Easily keep your skin clear of unsightly blemishes with a touch of a button.

SkinCeuticals Phyto Corrective Gel Samples 6 x 5ml $45.50 BENEFITS: Excellent oil-free hydrator for acneic skin Contains anti-inflammatory cucumber and anti-bacterial thyme to soothe and calm irritated skin Helps prepare skin for rejuvenating procedures, reducing post-treatment redness Plant glycosides help minimize discoloration Optimal for sensitive or problematic skin KEY INGREDIENTS: Cucumber and thyme Hyaluronic acid base Anit-inflammatory a...

Digitizing Ozone Cleansing Beauty Device For Acne Skin Treatment. Elimnate Bacteria And Acne, Reduces Inflammation And Itchiness, Provides Deep Pore Cleansing (Personal High Frequency) $98.00 Ozone Cleansing Beauty Device (Personal High Frequency) is a versatile handheld esthetic tool that uses ozone / o3 which has three oxygen atoms that is power to sterilize, detoxify, deodorize and whiten your skin. With its special herb smell, it will give you a refreshed feeling and has a powerful function for reducing inflammation, reducing pain, balancing the pH of the skin. Moist importantly, h...

Zeno Pro Acne Clearing Device with 90 Count Cartridge Zeno Pro is an acne clearing device. It is a hand-held, portable electronic medical device that is clinically proven to make pimples disappear fast. In fact, for treating acne pimples, it's the most scientifically advanced and effective device available without a prescription. Zeno is for people with mild to moderate inflammatory acne. Zeno Pro includes a custom leather carry case with mirror. The...

Zeno Replacement Tip Cartridge - PRO Series by Zeno (1 piece) $27.00 Zeno Replacement Tip Cartridge - PRO Series: Zeno quickly and safely eliminates mild to moderate acne. Description: Each Zeno tip is good for 90 treatment cycles, enough to eliminate at least 30 pimples. Each tip has a set lifespan, and lets you know when it's time for a replacement. Because Zeno kills the bacteria that cause acne, it is safe to use repeatedly. However, over time, the metal plate...

Zeno Acne Treatment Device Replacement Tip The Zeno Treatment Tip Cartridge, for use with your Zeno device, is programmed with a specific number of treatment cycles, indicated by the number inscribed on the top of the cartridge. Once the treatment cycles have been exhausted, the tip must be replaced. Replacing the tip of your Zeno is simple and can be done without special tools....