What does Glycerin do?#
Glycerin is a powerful humectant that helps keep skin feeling soft, smooth, and comfortably hydrated. It is one of the most widely used ingredients in skincare, known for leaving the complexion looking plumper and feeling more comfortable.
- Attracts and holds moisture in the skin's outer layers for long-lasting hydration
- Helps skin feel and look more balanced by supporting its natural moisture levels
- Helps maintain a smooth, supple skin surface with improved texture over time
How it works
Glycerin is one of the most widely used humectants in skincare. It helps skin look and feel plumper, softer, and more comfortable by maintaining moisture at the surface. With consistent use, glycerin supports a smoother, more supple skin texture and helps keep the complexion looking fresh and well-hydrated throughout the day.
How to use Glycerin#
- Every day, morning or evening. There is nothing to ease into and no adjustment period.
- In routine order: a toner goes on straight after cleansing, a serum after that, a cream last.
- Best applied while skin is still slightly damp from washing.
- Across the whole face, including around the eyes.
- Follow it with something richer — a cream or a balm. Glycerin draws water in, and an occlusive step is what keeps it there.
- Reapply whenever skin feels dry through the day, especially after washing your face.
- It sits comfortably between your other steps and does not need an evening of its own.
- A little goes a long way; 2-3 drops are usually enough for the full face.
Glycerin is one of the most well-tolerated skincare ingredients available and is suitable for all skin types, including sensitive skin.
Forms you will see it in
Hydrating toner
- Where it goes
- After cleansing, morning or evening
- How often
- Daily
- Strength
- Gentle
- Sun sensitivity
- None
Hydrating serum
- Where it goes
- Before moisturizer, morning or evening
- How often
- Daily
- Strength
- Gentle
- Sun sensitivity
- None
Hydrating moisturizer
- Where it goes
- As your moisturizer, morning or evening
- How often
- Daily
- Strength
- Gentle
- Sun sensitivity
- None
Using Glycerin with other ingredients
Pairs well with Glycerin
Hyaluronic acid
Works well togetherTogether they provide multi-level hydration, with glycerin working at the surface and hyaluronic acid binding water at deeper layers.
Ceramides
Works well togetherGlycerin draws water in while ceramides help prevent it from escaping, addressing both sides of the hydration equation.
Petrolatum
Works well togetherGlycerin attracts moisture into the skin and petrolatum seals it in, a well-established pairing.
Niacinamide
Works well togetherNiacinamide supports the look and feel of the skin's moisture barrier while glycerin provides the water it retains.
Urea
Works well togetherBoth are humectants that help skin hold on to moisture, working together for a hydrated, comfortable feel.
Ferments / Probiotics
Works well togetherBoth help skin stay hydrated, complementing each other for a lasting, comfortable feel.
Oat Extract
Works well togetherTogether they support multi-level moisture retention for a well-hydrated appearance.
Allantoin
Works well togetherTogether they support moisture from multiple angles for well-hydrated skin.
What not to use with Glycerin
Nothing flagged. None of the ingredients this wiki covers needs to be kept apart from Glycerin — check the label of anything not covered here.
Who should avoid Glycerin?#
Six situations change whether Glycerin suits your skin right now. Each one is either a reason to skip it, a reason to go slowly, or nothing to watch for.
- Maternity & Nursing
- No caution
- Fragile or Sensitive
- No caution
- Recent Facial or Laser
- No caution
- Prone to Redness
- No caution
- Dry or Itchy Patches
- No caution
- Recent Shave or Wax
- No caution
Cosmetic strength limits for Glycerin where you live#
| Region | Maximum strength |
|---|---|
| United States | No explicit cap |
| Canada | No explicit cap |
| European Union | No explicit cap |
| Great Britain | No explicit cap |
No cosmetic regulator in these four markets sets a maximum strength for glycerin. That is a limit on the rules, not a signal to use more: how much goes into a product is the formulator's decision.
Products with Glycerin#
We may earn a small commission when you buy through these links.
Hydrating toner · 4
Hydrating serum · 4
Hydrating moisturizer · 1
Common questions about Glycerin#
When should you apply Glycerin?
- Every day, morning or evening. There is nothing to ease into and no adjustment period.
Which form of Glycerin should you use?
- Hydrating toner — after cleansing, morning or evening, daily. Hydrating serum — before moisturizer, morning or evening, daily. Hydrating moisturizer — as your moisturizer, morning or evening, daily.
How often can you use Glycerin?
- Daily.
Where do you apply Glycerin?
- All over the face. Keep it away from your eyes and lips.
Does Glycerin make skin more sensitive to the sun?
- No. Glycerin is not flagged as increasing sun sensitivity.
What should you not use with Glycerin?
- Nothing flagged. None of the ingredients this wiki covers needs to be kept apart from Glycerin — check the label of anything not covered here.
Is there a cosmetic limit for Glycerin?
- No. No cosmetic regulator in the United States, Canada, the European Union or Great Britain sets a maximum strength for it. That is a limit on the rules, not a signal to use more.
Related ingredients#
How we check this#
Everything on this page traces to the sources listed below — regulators' own publications and published studies. Where the evidence does not answer a question, it is left unanswered.
Some sources below are the official product information for prescription medicines — some contain this ingredient at higher strengths, others are cited for how they interact with it. We use them for their safety and handling detail only. A cosmetic product is not one of those medicines and is not intended to treat any condition.
Our review is AI-assisted and is not a named expert's opinion. Last reviewed August 4, 2026.
Think something here is out of date or wrong? Email us at wiki@skinintelligence.ai with your reasoning and where you read it. We read what people send, and we update the page when the sources support it.
Regulators and official bodies · 14
- S1Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD, Liebler DC, Marks JG Jr, Shank RC, Slaga TJ, Snyder PW, Gill LJ, Heldreth B. "Safety Assessment of Glycerin as Used in Cosmetics." Int J Toxicol 2019;38(3_suppl):6S-22S. PMID 31840548. (Same assessment as the CIR Final Report, release date 14 January 2015, panel meeting 8–9 December 2014.).
- S2FDA. OTC Monograph M016 — Skin Protectant Drug Products for Over-the-Counter Human Use, 24 September 2021. §§ M016.10(h), M016.50(b)(2), (b)(9), (c)(1)–(c)(4), (d)(1), (d)(5).
- S3FDA. Skin Protectant Drug Products for Over-the-Counter Human Use; Final Monograph, 4 June 2003, 21 CFR parts 347 and 352.
- S4Health Canada. Cosmetic Ingredient Hotlist — Prohibited and Restricted Ingredients. Glycerin, CAS 56-81-5; Diethylene glycol, CAS 111-46-6.
- S5Regulation (EC) No 1223/2009 on cosmetic products, consolidated text of 1 September 2025 (CELEX 02009R1223-20250901).
- S6Retained Regulation (EC) No 1223/2009 as it applies in Great Britain, Annex II (prohibited substances) and Annex III (restricted substances), legislation.gov.uk.
- S18NICE. Atopic eczema in under 12s: diagnosis and management (CG57), recommendations 1.5.1.4, 1.5.1.5, 1.5.1.9, 1.5.1.10 and the stepped-care table.
- S19WHO EML Expert Committee 2025 submission A.30, Inclusion of urea- and glycerol-based topical moisturizers on the EML and EMLc for the treatment of atopic dermatitis in adults and children. An application document submitted to the committee, not a WHO mandate decision — weighted accordingly throughout.
- S21Glycerin Suppositories BP 4g Adult Size — Summary of Product Characteristics, MA PL 12965/0015, text revised 2 January 2015. Glycerol 70.0% w/w. Sections 4.3, 4.4, 4.5, 4.6, 5.1.
- S22Roaccutane 10 mg soft capsules — Summary of Product Characteristics, section 4.4.
- S23Differin Cream (adapalene) — Summary of Product Characteristics, sections 4.2, 4.4, 4.5.
- S25National Rosacea Society. Coping With Rosacea — Coping With Common Triggers, Skin Care Products section.
- S26National Rosacea Society. Rosacea Skin Care & Cosmetics; All About Rosacea, Skin Care section.
- S27National Rosacea Society. Seal of Acceptance — Guidelines for Approval.
Studies and references · 25
- S7Lodén M, Wessman W. "The influence of a cream containing 20% glycerin and its vehicle on skin barrier properties." Int J Cosmet Sci 2001;23(2):115-9. PMID 18498456.
- S8Breternitz M, Kowatzki D, Langenauer M, Elsner P, Fluhr JW. "Placebo-controlled, double-blind, randomized, prospective study of a glycerol-based emollient on eczematous skin in atopic dermatitis: biophysical and clinical evaluation." Skin Pharmacol Physiol 2008;21(1):39-45. PMID 18025807.
- S9Atrux-Tallau N, Romagny C, Padois K, Denis A, Haftek M, Falson F, Pirot F, Maibach HI. "Effects of glycerol on human skin damaged by acute sodium lauryl sulphate treatment." Arch Dermatol Res 2010;302(6):435-41. PMID 20043170.
- S10Ventura SA, Kasting GB. "Dynamics of glycerine and water transport across human skin from binary mixtures." Int J Cosmet Sci 2017;39(2):165-178. PMID 27566278.
- S11Batt MD, Fairhurst E. "Hydration of the stratum corneum." Int J Cosmet Sci 1986;8(6):253-64. PMID 19457222.
- S12Wiechers JM, Barlow T. "Skin moisturisation and elasticity originate from at least two different mechanisms." Int J Cosmet Sci 1999;21(6):425-35. PMID 18503456.
- S13Fluhr JW, Gloor M, Lehmann L, Lazzerini S, Distante F, Berardesca E. "Glycerol accelerates recovery of barrier function in vivo." Acta Derm Venereol 1999;79(6):418-21. PMID 10598752.
- S14Bettinger J, Gloor M, Peter C, Kleesz P, Fluhr J, Gehring W. "Opposing effects of glycerol on the protective function of the horny layer against irritants and on the penetration of hexyl nicotinate." Dermatology 1998;197(1):18-24. PMID 9693180.
- S15Rawlings A, Harding C, Watkinson A, Banks J, Ackerman C, Sabin R. "The effect of glycerol and humidity on desmosome degradation in stratum corneum." Arch Dermatol Res 1995;287(5):457-64. PMID 7625857.
- S16Korponyai C, Szél E, Behány Z, Varga E, Mohos G, Dura Á, Dikstein S, Kemény L, Erős G. "Effects of Locally Applied Glycerol and Xylitol on the Hydration, Barrier Function and Morphological Parameters of the Skin." Acta Derm Venereol 2017;97(2):182-187. doi:10.2340/00015555-2493.
- S17Chen HJ, Lee PY, Chen CY, Huang SL, Huang BW, Dai FJ, Chau CF, Chen CS, Lin YS. "Moisture retention of glycerin solutions with various concentrations: a comparative study." Sci Rep 2022;12(1):10232. PMID 35715536.
- S20Gloor M, Gehring W. "Increase in hydration and protective function of horny layer by glycerol and a W/O emulsion: are these effects maintained during long-term use?" Contact Dermatitis 2001;44(2):123-5. PMID 11205397. No abstract available in the retrieved record; cited for existence of the question only, not relied on for any value..
- S24Okan G, Rendon MI. "The effects of a high glycerin content hydrogel premolded mask dressing on post-laser resurfacing wounds." J Cosmet Laser Ther 2011;13(4):162-5. PMID 21699364.
- S28Szél E, Polyánka H, Szabó K, Hartmann P, Degovics D, Balázs B, Németh IB, Korponyai C, Csányi E, Kaszaki J, Dikstein S, Nagy K, Kemény L, Erős G. "Anti-irritant and anti-inflammatory effects of glycerol and xylitol in sodium lauryl sulphate-induced acute irritation." J Eur Acad Dermatol Venereol 2015;29(12):2333-41. PMID 26370610.
- S29Björklund S, Engblom J, Thuresson K, Sparr E. "Glycerol and urea can be used to increase skin permeability in reduced hydration conditions." Eur J Pharm Sci 2013;50(5):638-45. PMID 23643739.
- S30Björklund S, Andersson JM, Pham QD, Nowacka A, Topgaard D, Sparr E. "Stratum corneum molecular mobility in the presence of natural moisturizers." Soft Matter 2014;10(25):4535-46. PMID 24817485.
- S31Vaillant L, Georgescou G, Rivollier C, Delarue A. "Combined effects of glycerol and petrolatum in an emollient cream: A randomized, double-blind, crossover study in healthy volunteers with dry skin." J Cosmet Dermatol 2020;19(6):1399-1403. PMID 31532576.
- S32Milani M, Sparavigna A. "The 24-hour skin hydration and barrier function effects of a hyaluronic 1%, glycerin 5%, and Centella asiatica stem cells extract moisturizing fluid: an intra-subject, randomized, assessor-blinded study." Clin Cosmet Investig Dermatol 2017;10:311-315. PMID 28860834.
- S33Choi EH, Man MQ, Wang F, Zhang X, Brown BE, Feingold KR, Elias PM. "Is endogenous glycerol a determinant of stratum corneum hydration in humans?" J Invest Dermatol 2005;125(2):288-93. PMID 16098039.
- S34Fluhr JW, Mao-Qiang M, Brown BE, Wertz PW, Crumrine D, Sundberg JP, Feingold KR, Elias PM. "Glycerol regulates stratum corneum hydration in sebaceous gland deficient (asebia) mice." J Invest Dermatol 2003;120(5):728-37. PMID 12713573.
- S35Hara M, Verkman AS. "Glycerol replacement corrects defective skin hydration, elasticity, and barrier function in aquaporin-3-deficient mice." PNAS 2003;100(12):7360-5. PMID 12771381.
- S36Chularojanamontri L, Tuchinda P, Kulthanan K, Pongparit K. "Moisturizers for Acne: What are their Constituents?" J Clin Aesthet Dermatol 2014;7(5):36-44. PMID 24847408.
- S37Moisturizers. StatPearls / NCBI Bookshelf, NBK545171, "Clinical Significance — Humectants". Cited without author names: the retrieved record does not carry an author string, and per the fabricated-attribution rule the work is cited without one.
- S38Luna S, et al. "Bio-Revitalizing SkinGlow: Assessing the Efficacy of Microcannula-Assisted Treatment With Cohesive Polydensified Matrix Hyaluronic Acid With Glycerol (Belotero Revive)…" J Cosmet Dermatol 2025. PMID 41104764. Cited only to record that glycerol's appearance in the injectables literature is as a filler excipient, an injected exposure.
- S39A Guide to the Ingredients and Potential Benefits of Over-the-Counter Cleansers and Moisturizers for Rosacea Patients. PMC3168246. Cited at abstract level only — the retrieved record contains the abstract, which names humectants as a class and does not name glycerin.
