Medik8 Sleep Glycolic™ | Overnight AHA Peel | 30ml – Skintique Retail

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Medik8 Sleep Glycolic™ | Overnight AHA Peel | 30ml

Time Release AHA Overnight At-home Peel

Skin Types - Rough Skin, Acne Prone / Congested, Mature, Normal, Combination, and Oily

£34.99 £39.00

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More Information

Additional Product Information

Size: 30ml (1.0 FL OZ)

Texture: Lightweight, fast-absorbing cream

Skin Type Suitability: Normal, combination, and oily skin types; not suitable for sensitive skin

Clinical Testing: Tested over 4 weeks on 34 participants with ageing concerns; 97% experienced smoother skin, 94% noticed visibly illuminated complexions

Free-From Claims: Paraben-free, alcohol-free, no artificial fragrance, no synthetic colours

Packaging: Fully recyclable

Special Notes

Certifications: Certified by The Vegan Society, Cruelty-free, B Corp Certified brand (Medik8 is one of only 66 beauty manufacturers worldwide with esteemed social and environmental impact certification)

Free-From Status: Vegan, cruelty-free, paraben-free, alcohol-free, no artificial fragrance, no synthetic colours

Storage Requirements: Keep out of reach of children

Unique Features: Crystal encapsulation technology for gradual release; optimised pH 3.5 for true 10% active glycolic acid; formulated and manufactured at Medik8's ISO-certified Innovation Centre in the UK

Directions

How To Use

Application: For use 2-3 times per week. After cleansing in the evening, apply a pea-sized amount of Sleep Glycolic™ to face, neck, and décolletage, carefully avoiding the eye area. Some slight tingling is normal.

Frequency: Use bi-weekly, 2-3 times per week only. Do not use daily. Sleep Glycolic™ should be the first step in your evening routine after cleansing, before applying other serums and moisturisers.

Timing: Evening use only. Leave on overnight.

Layering: As Sleep Glycolic™ is a direct acid, it should be applied immediately after cleansing as the first step in your evening routine. Layer all other serums and night moisturiser over the top. Can be used alongside retinol products once skin is fully acclimatised to nightly vitamin A use.

Expert Tips: Always wear sunscreen with broad-spectrum protection the following day after using Sleep Glycolic™, as AHAs increase photosensitivity. If you want to enhance visible brightening and decongesting results, our experts recommend using Clarity Peptides as your daily peptide serum alongside bi-weekly Sleep Glycolic™ treatments. Avoid using on the same evening as Blemish Control Pads or Press & Glow. Wait 5-7 days post professional peel before reintroducing Sleep Glycolic™ into your routine.

Ingredients

Full Ingredients List

Aqua (Water), Glycolic Acid, Cyclodextrin, Caprylic/Capric Triglyceride, Dimethicone, Glyceryl Stearate, Sucrose Stearate, Sodium Hydroxide, Glycerin, Phenoxyethanol, Lespedeza Capitata Flower/Leaf/Stem Extract, Propanediol, Xanthan Gum, Ethylhexylglycerin, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Polysorbate 60, Sorbitan Isostearate.

"Please note: Formulations are updated periodically by manufacturers without notice. Therefore, the ingredient lists on this website may differ from the product packaging depending on the time and country of purchase. Please refer to your product packaging for accurate ingredient lists. A patch test before use must be carried out for suitability."

FAQ

FAQ

Q: Can I use Sleep Glycolic™ alongside my retinol products?
A: Yes, Sleep Glycolic™ can be used alongside retinol or retinal products. However, only introduce Sleep Glycolic™ after your skin is fully acclimatised to using your vitamin A product every night without irritation. Use them on alternate evenings—for example, use retinol on Monday, Wednesday, Friday, and Sunday, and use Sleep Glycolic™ on Tuesday and Thursday. Always listen to your skin and speak to our experts for personalised layering guidance.

Q: Why is bi-weekly use recommended rather than daily use?
A: At Medik8, we believe that occasional use of high-strength glycolic acid is optimal for maintaining healthy skin barrier function. Daily use of powerful acids can compromise the skin's natural protective barrier, leading to sensitivity and impaired skin health. Sleep Glycolic™ delivers true 10% active glycolic acid—a genuinely powerful concentration. By using it 2-3 times weekly, you achieve optimal exfoliation results whilst protecting your skin's long-term health and resilience.

Q: How quickly will I see results?
A: Many users notice immediate improvements in skin smoothness and radiance upon waking after the first use. For progressive improvements in concerns such as hyperpigmentation, fine lines, and overall texture refinement, clinical studies demonstrate significant visible results after 4 weeks of consistent bi-weekly use. Individual results may vary based on skin type and specific concerns.

Q: Can I use this if I have in-clinic peel treatments?
A: Absolutely. Sleep Glycolic™ is ideal for complementing professional treatments. It can prepare skin for first-ever peel programmes and help prolong results between professional facial or peeling courses. However, avoid using Sleep Glycolic™ for 5-7 days immediately following an in-clinic peel to allow skin to recover. Speak to our experts for personalised advice on integrating this treatment with your professional skincare schedule.

Q: Is slight tingling normal?
A: Yes, some slight tingling upon application is completely normal and indicates the active glycolic acid is working effectively. This sensation typically subsides within a few minutes. However, if you experience persistent stinging, burning, or significant discomfort, remove the product and consult our skincare specialists for guidance.

Delivery

Free UK delivery is available for all orders over £50.

Orders under £50 are subject to a delivery fee of £4.95.

All orders are sent via a tracked service and you will be emailed a tracking number once dispatched.

Express delivery is available for some brands at an extra cost with a cut off time of 2pm and subject to stock.

Express delivery and high-value orders over £100 are sent with a Tracked 24 signed for delivery.

Your order will be dispatched within 1-2 working days and is estimated to be delivered after dispatch within 2-4 working days for standard shipping and 1-3 working days on an express service. Subject to stock availablity.

Cut-off for standard shipping orders is 3:30 pm (2:00pm Fridays) subject to stock.

Orders placed after 2pm on Fridays will not be dispatched until the following Monday subject to the above schedule.

Please see our full Shipping policy
Please see our full Returns policy.

Key Benefits

  • Radiant, visibly refined skin: Removes dead skin cells to reveal a smoother, glowing complexion with more even tone and texture
  • Active 10% encapsulated glycolic acid: High concentration formula is time-released into skin overnight to deliver optimum AHA power with comfort
  • Healthy skin barrier maintenance: Non-drying formulation keeps the natural protective barrier healthy and strong throughout the exfoliation process
  • Complements in-clinic treatments: Ideal to prepare for first peel programmes or prolong results of professional peeling and facial courses
  • Clinically proven results: 97% of users agreed their skin surface was smoothed, 94% felt their complexion was visibly illuminated

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Medik8 Sleep Glycolic™-Serum-Skintique Retail
Medik8

Medik8 Sleep Glycolic™ | Overnight AHA Peel | 30ml

£34.99 £39.00

Product Overview - Medik8 Sleep Glycolic™ Overnight AHA Peel


Medik8 Sleep Glycolic™ is a professional-grade overnight AHA peel treatment designed to transform dull, uneven complexions while you sleep. This innovative leave-on formula harnesses the power of 10% Active Glycolic Acid delivered through cutting-edge Crystal Encapsulation Technology, ensuring powerful exfoliation without the redness and irritation typically associated with traditional peels. The intelligent time-release system gradually delivers the AHA throughout the night, making this treatment suitable for most skin types seeking visibly brighter, smoother, and more radiant skin.

Formulated with Glycolic Acid, the smallest and most penetrating alpha hydroxy acid, alongside supportive ingredients including Korean Clover Extract and Glycerin, this bi-weekly treatment addresses stubborn skin concerns including uneven texture, lacklustre tone, fine lines, and hyperpigmentation. Clinical studies demonstrate that 97% of users experienced smoother skin and 94% noticed visibly illuminated complexions after just four weeks of use. Suitable for normal, combination, and oily skin types looking to enhance their CSA philosophy skincare routine.

Key Benefits at a Glance:

Immediate Benefits:
Long-Term Benefits:

With consistent bi-weekly use, Sleep Glycolic™ delivers progressive improvements in overall skin quality. The treatment visibly diminishes fine lines and wrinkles whilst addressing hyperpigmentation and dark spots for a more even, youthful-looking complexion. The gradual resurfacing action promotes cellular renewal, revealing fresher, healthier-looking skin with improved tone and texture over time.

Our experts particularly value this treatment for its ability to prolong the results of in-clinic peeling treatments, making it an ideal companion for those undergoing professional facial courses or seeking to maintain their clinic results at home between appointments.

How will it feel on my Skin?:

Sleep Glycolic™ features a lightweight, silky texture that absorbs effortlessly into the skin. Upon application, you may experience slight tingling—this is completely normal and indicates the active glycolic acid is working. The sensation typically subsides within minutes, and unlike traditional peels, there is no downtime, flaking, or visible peeling. Skin remains comfortable throughout the night, and by morning, you'll notice a smoother, softer surface with a healthy, illuminated glow.

Who is it Suitable For?

Not recommended for sensitive or reactive skin types.

Why choose Medik8 Sleep Glycolic™?

Unlike daily glycolic toners that can compromise the skin barrier with frequent use, Sleep Glycolic™ takes Medik8's considered approach to AHA exfoliation—delivering true 10% active glycolic acid at an optimised pH of 3.5 for maximum efficacy, used just 2-3 times weekly. The innovative crystal encapsulation technology sets this treatment apart, gradually releasing the powerful acid throughout the night to prevent irritation whilst maintaining visible results. Clinically proven and dermatologist-recommended, this professional-grade formula delivers salon-quality resurfacing results in the comfort of your own home.

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