# Medik8 Sleep Glycolic for oily skin

**Lovi Fit: Average fit for oily skin.**
Oily Skin Fit: High · Effectiveness: Average · Safety: Low Risk.

Page: https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/oily-skin

The Lovi Fit is the same in every country; only the stores and prices differ, and the ones here are for Ireland.

Brand: [Medik8](https://lovi.care/skincare/ie/brands/medik8)
Category: [Exfoliants](https://lovi.care/skincare/ie/best/exfoliators)

This fit is calculated for the concerns frequently associated with oily skin: shine, enlarged pores, blackheads, and blemishes. For scores based on a full skin profile (12D face scan, goals, preferences), use the Lovi app.

Works for oily skin; other products fit it better.

## Why this fit

- Offers moderate exfoliation for your oily skin, with Glycolic Acid providing keratolytic action and Lespedeza Capitata Stem Extract potentially helping with seboregulation.
- While it offers general skincare benefits like hydration and cleansing, its primary function is supportive rather than directly addressing oily shine.
- The product is generally safe for your oily skin, though the Glycolic Acid may pose a slight risk of irritation.

## Fit by skin type

- [Oily skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/oily-skin): Average (this page)
- [Dry skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/dry-skin): Average
- [Combination skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/combination-skin): Average
- [Sensitive skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/sensitive-skin): Average
- [Acne-prone skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/acne-prone-skin): Average
- [Skin with dark spots](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/dark-spots): Average
- [Mature skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/mature-skin): Average
- [Dry sensitive skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/dry-sensitive-skin): Average
- [Oily acne-prone skin](https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/oily-acne-prone-skin): Average

## Key ingredients

Glycolic Acid, Glycerin, Lespedeza Capitata Stem Extract Flower Leaf, Dimethicone, Cyclodextrin

## What the research says

- A combination of dermapen and glycolic acid peel significantly decreased acne scar grades and resulted in higher patient satisfaction compared to either monotherapy in 30 patients. ([Journal of Cosmetic Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/30548170/))
- Glycolic acid, salicylic acid, gluconolactone, and licochalcone A combined with 0.1% adapalene showed no hindrance compared to adapalene monotherapy and provided benefits in reducing complications in 25 subjects with mild-to-moderate acne vulgaris. ([Clinical, Cosmetic and Investigational Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/30858720/))
- A single application of a moisturizing fluid containing hyaluronic acid 1%, glycerin 5%, and Centella asiatica stem cells extract significantly increased skin hydration by 29% and reduced transepidermal water loss at 24 hours compared to baseline and an untreated control site in twenty healthy women. ([Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/))
- Repeated short-contact 70% glycolic acid peels provided superior results in atrophic acne scars compared to daily low-strength glycolic acid cream or placebo in 58 women over 24 weeks. ([International Journal of Dermatology, 2000](https://pubmed.ncbi.nlm.nih.gov/11095203/))
- Serial glycolic acid peels combined with a modified Kligman formula significantly reduced facial PIH severity in Indian patients compared to the modified Kligman formula alone. ([Dermatologic Surgery, 2017](https://pubmed.ncbi.nlm.nih.gov/28114204/))
- The emollient V0034CR significantly reduced TEWL compared to vehicle and vehicle plus glycerol, and significantly increased corneometry scores compared to vehicle and vehicle plus petrolatum in healthy volunteers with dry skin, demonstrating combined barrier function improvement from petrolatum and hydration improvement from glycerol. ([Journal of Cosmetic Dermatology, 2020](https://pubmed.ncbi.nlm.nih.gov/31532576/))
- Ten days of treatment with a cream containing 20% glycerin significantly increased skin hydration measured by corneometer values in 17 healthy volunteers compared to a placebo cream, but showed no influence on transepidermal water loss or skin sensitivity to an irritating surfactant. ([International Journal of Cosmetic Science, 2001](https://pubmed.ncbi.nlm.nih.gov/18498456/))
- Niacinamide/glycerin body moisturizers provided better rapid and prolonged improvement of cosmetic xerosis through functional improvement of stratum corneum barrier function compared to no treatment and conventional moisturizers in female subjects. ([Journal of Drugs in Dermatology, 2012](https://pubmed.ncbi.nlm.nih.gov/22206073/))
- The circadian clock component PER represses MMP-1 expression via the cAMP signaling pathway and mediates the MMP-1 suppression induced by Lespedeza capitata extract in HaCaT keratinocytes. ([Molecules, 2018](https://pubmed.ncbi.nlm.nih.gov/29570674/))
- Wearing an N95 mask alone compared to using dimethicone cream or hydrocolloid dressing caused more adverse skin reactions among 73 military health care workers, with no significant differences in fit test failure rates between groups. ([Military Medicine, 2024](https://pubmed.ncbi.nlm.nih.gov/38771104/))
- A dimethicone skin protectant lotion significantly decreased visual scoring and transepidermal water loss compared to vehicle control and SLS-only treated sites in 12 healthy humans exposed to sodium lauryl sulfate. ([Skin Research and Technology, 2000](https://pubmed.ncbi.nlm.nih.gov/11428946/))
- Treatment with a moisturizer containing dimethicone and glycerine increased epidermal thickness by 0.019 mm, improved barrier function by decreasing transepidermal water loss by 13%, decreased melanin intensity, and induced keratins 6 and 16 in fifteen women with moderately photoaged forearms. ([Clinical and Experimental Dermatology, 2007](https://pubmed.ncbi.nlm.nih.gov/17137484/))
- Topical retinoic acid-beta-cyclodextrin complex formulations at 0.025% showed greater acne improvement scores (4.0-4.1) and lower irritation than a commercial 0.05% retinoic acid gel (score 3, with side effects in all patients) after 3 months in 66 patients with acne vulgaris. ([Journal of the European Academy of Dermatology and Venereology, 2004](https://pubmed.ncbi.nlm.nih.gov/15196153/))
- Tretinoin cyclodextrin complex demonstrated an antiwrinkle effect equal to that of conventional tretinoin with more moderate irritant reactions in photoaged patients. ([Aesthetic Plastic Surgery, 2012](https://pubmed.ncbi.nlm.nih.gov/22538278/))
- Binary systems of trans-resveratrol with polyethylene glycol or beta-cyclodextrin enhanced its antioxidant activity and in vivo skin anti-aging effects compared to trans-resveratrol alone in human keratinocytes and volunteers. ([Drug Development and Industrial Pharmacy, 2014](https://pubmed.ncbi.nlm.nih.gov/23862976/))

## Why other products fit oily skin better

- A panthenol-enriched mask improved skin hydration, regulated sebum, and reduced redness and TEWL across dry sensitive, oily sensitive, and oily acne skin subgroups with excellent tolerance and no adverse reactions. ([Journal of Cosmetic Dermatology, 2024](https://pubmed.ncbi.nlm.nih.gov/38366684/))
- Niacinamide and ferulic acid incorporated in a stable multiple emulsion successfully reduced melanin, sebum, and skin erythema while improving skin elasticity and hydration in human skin compared to a placebo. ([BioMed Research International, 2022](https://pubmed.ncbi.nlm.nih.gov/35342760/))

## What reviewers say

Based on a very large amount of data, this product is highly praised for its ability to transform dull skin into a glowing, radiant complexion. Users report significant improvements in skin texture, hyperpigmentation, and fine lines, with many noting a lack of irritation. Some users experience a mild tingling sensation or dryness.

- Liked: Glowing, radiant skin (mostly mentioned)
- Liked: Smoother skin texture (mostly mentioned)
- Liked: No irritation (often mentioned)
- Liked: Reduces dullness (sometimes noted)
- Disliked: Causes mild dryness (rarely noted)
- Disliked: Slight tingling sensation (rarely noted)
- Disliked: Too strong frequently (rarely noted)

## How to apply

- Use this exfoliant product as part of your PM routine once a week. Start slowly and build up frequency only if your skin tolerates it well.
- Apply the exfoliant after cleansing and toner, but right before your moisturizer.
- Gently press 2-3 drops of the exfoliant into your skin and let it absorb fully. Avoid any harsh rubbing to keep your skin calm.
- Apply the exfoliant directly onto completely dry skin to get the best balance and results. Clean, dry skin helps the product work evenly.
- Always avoid the delicate eye area when applying. Be sure to use a broad-spectrum SPF 30+ daily while using exfoliating acids.
- Video: https://storage.pora.ai/028e5e793422a3b665c02ff502cf5a68.mp4

## Questions and answers

### How well does Medik8 Sleep Glycolic work for oily skin?

Medik8 Sleep Glycolic is an average fit for oily skin, offering moderate exfoliation and hydration with a slight risk of irritation. Oily skin works best with products containing ingredients like niacinamide, ferulic acid, zinc PCA, and soothing extracts that control excess oil and shine without causing irritation or breakouts.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [Journal of Cosmetic Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/30548170/)

### Which ingredients make this exfoliant a good fit for oily skin?

Glycolic acid provides moderate exfoliation for oily skin, while lespedeza capitata stem extract may help control oil and glycerin adds light hydration. An exfoliant of this type needs ingredients like niacinamide to control excess oil, zinc pca to help with pores, and soothing extracts for comfort.
Sources: [Clinical, Cosmetic and Investigational Dermatology, 2017](https://pubmed.ncbi.nlm.nih.gov/28860834/), [Journal of Cosmetic Dermatology, 2019](https://pubmed.ncbi.nlm.nih.gov/30548170/)

### What does Glycolic Acid do for oily skin?

Glycolic acid helps clear away dead skin and excess oil for a smooth, clean feel. It gently removes buildup from the surface, which keeps pores clear and skin looking fresh.
Sources: [Molecules, 2023](https://pubmed.ncbi.nlm.nih.gov/37894698/), [Journal of the European Academy of Dermatology and Venereology, 2011](https://pubmed.ncbi.nlm.nih.gov/21029205/)

### What does Glycerin do for oily skin?

Glycerin helps keep oily skin hydrated without feeling heavy and supports the skin barrier. Because this product is a weak fit for your skin, an ideal product of this type needs lightweight hydrators and ingredients that balance oil while protecting the skin.
Sources: [The British Journal of Dermatology, 2008](https://pubmed.ncbi.nlm.nih.gov/18510666/), [International Journal of Toxicology, 2019](https://pubmed.ncbi.nlm.nih.gov/31840548/)

### Where does this exfoliant go in a skincare routine for oily skin?

This exfoliant treatment goes in the evening routine, starting at once a week so your skin can adjust. Glycolic acid gives moderate exfoliation, but oily skin also needs ingredients that directly manage excess oil and shine.

### Can I use it with retinol, and in what order?

It is generally best to use glycolic acid and retinol on different nights to avoid irritation on oily skin. If you do use them together, apply the retinol first, let it absorb completely, and follow with this treatment only if your skin is used to strong ingredients.

### How often should I use it?

Start using this treatment once a week in your evening routine, and if your skin feels comfortable and looks good, you may carefully use it more often. To truly target oily shine and control excess oil, oily skin needs an exfoliant treatment with stronger oil-controlling and pore-clearing ingredients.

### Can it clog pores, cause breakouts or purging for oily skin?

Medik8 Sleep Glycolic is unlikely to clog pores or cause breakouts for oily skin, though the glycolic acid may cause a slight risk of irritation or mild dryness. To better control oily shine, this skin type needs products that directly balance oil production and purify pores.

### Is it fragrance-free and alcohol-free?

Yes, it has no fragrance and no drying alcohol.

## Alternatives for oily skin

- [Beauty of Joseon Propolis + Niacinamide Glow Serum](https://lovi.care/skincare/ie/p/beauty-of-joseon/propolis-niacinamide-glow-serum/for/oily-skin) — Superior fit — €14.94 at Amazon
- [Neogen Dermalogy Real Niacinamide 15% Firming Serum](https://lovi.care/skincare/ie/p/neogen-dermalogy/real-niacinamide-15-firming-serum/for/oily-skin) — Superior fit — €52.57 at Amazon
- [SkinCeuticals C E Ferulic](https://lovi.care/skincare/ie/p/skinceuticals/c-e-ferulic/for/oily-skin) — High fit — €185.00 at Amazon

## Pairs well with

- Cleanser: [CeraVe Foaming Facial Cleanser](https://lovi.care/skincare/ie/p/cerave/foaming-facial-cleanser/for/oily-skin) — Superior fit — €21.45 at Amazon
- Hydrating Toner: [SOME BY MI Snail Truecica Miracle Repair Toner](https://lovi.care/skincare/ie/p/some-by-mi/snail-truecica-miracle-repair-toner/for/oily-skin) — Superior fit — €19.99 at Amazon
- Moisturizer: [COSRX Oil-Free Ultra-Moisturizing Lotion with Birch Sap](https://lovi.care/skincare/ie/p/cosrx/oil-free-ultra-moisturizing-lotion-with-birch-sap/for/oily-skin) — Superior fit — €16.50 at Amazon

## Where to buy

No store in Ireland has a checked price for this product, so the page shows none.

## Ingredients

Water, Glycolic Acid, Cyclodextrin, Caprylic Capric Triglyceride, Dimethicone, Glyceryl Stearate, Sucrose Stearate, Sodium Hydroxide, Glycerin, Phenoxyethanol, Lespedeza Capitata Stem Extract Flower Leaf, Propanediol, Xanthan Gum, Ethylhexylglycerin, Hydroxyethyl Acrylate Sodium Acryloyldimethyl Taurate Copolymer, Polysorbate 60, Sorbitan Isostearate
## About the Lovi Fit

Lovi: Unbiased, science-based skincare AI trained on real user outcomes.

Lovi calculates every fit score from the full ingredient list with brand-independent rules its dermatologists and cosmetic chemists build and review, and personalizes every pick with AI trained on the real results of millions of users. Lovi trains its fit score models on a proprietary dataset built from more than 10,000 expert-labeled products and more than 100,000 simulated examples, following an internally consistent methodology presented at Cosmoprof, AMWC, and Skin of Color Update. Levels from best to worst: Superior, High, Average, Low, Caution, Warning.

Behind this fit score: Nadia Kapleva, MS (Co-founder, Medical Director); Alexey Shagraev, PhD (Co-founder, CEO and CTO); Dr. Sofía Perea Pérez, MD, MSc (Medical Board); Aishani Shah, MD (Medical Board); Asya Zubkova, MS (Medical Board); Hanna Kurets, MD (Medical Board, Medical Advisor); Elina Nazarenko, MD (Medical Board); Victoria Derkova, MS (Medical Board).

Page built Nov 8, 2026.

More from Lovi: https://lovi.care/skincare/llms.txt

## This page in other countries

- United States: https://lovi.care/skincare/p/medik8/sleep-glycolic/for/oily-skin
- United Kingdom: https://lovi.care/skincare/uk/p/medik8/sleep-glycolic/for/oily-skin
- Ireland: https://lovi.care/skincare/ie/p/medik8/sleep-glycolic/for/oily-skin (this page)
- Germany: https://lovi.care/skincare/de/p/medik8/sleep-glycolic/for/oily-skin
- France: https://lovi.care/skincare/fr/p/medik8/sleep-glycolic/for/oily-skin
- Italy: https://lovi.care/skincare/it/p/medik8/sleep-glycolic/for/oily-skin
- Netherlands: https://lovi.care/skincare/nl/p/medik8/sleep-glycolic/for/oily-skin
- Spain: https://lovi.care/skincare/es/p/medik8/sleep-glycolic/for/oily-skin
- Canada: https://lovi.care/skincare/ca/p/medik8/sleep-glycolic/for/oily-skin
- Australia: https://lovi.care/skincare/au/p/medik8/sleep-glycolic/for/oily-skin
- Singapore: https://lovi.care/skincare/sg/p/medik8/sleep-glycolic/for/oily-skin
- Saudi Arabia: https://lovi.care/skincare/sa/p/medik8/sleep-glycolic/for/oily-skin
- United Arab Emirates: https://lovi.care/skincare/ae/p/medik8/sleep-glycolic/for/oily-skin