
Ceramides: Helps formulate moisturizers for dry and eczema-prone skin. Licorice Root Extract: Some licorice-derived compounds are studied for uneven pigmentation.


Choose for dry or eczema-prone skin; judge the complete moisturizer.
Consider as an optional pigment ingredient; independent clinical evidence is limited.
Can you use both?
A gentle pairing for redness and uneven tone.
Compare uses by strength of evidence. Evidence level describes confidence in a benefit, not its size.













Replenishes barrier lipids: Ceramides help support the lipid matrix. Helps limit water loss: A well-formulated moisturizer supports barrier function.
Schematic illustration; not a measurement of skin penetration. Effects vary with ingredient identity and formulation.

Contains several active compounds: Glabridin and liquiritin have different actions. May help uneven pigmentation: Extracts and clinical evidence vary.
Schematic illustration; not a measurement of skin penetration. Effects vary with ingredient identity and formulation.
Built from where each one usually sits in a routine. Introduce one at a time.
There is no single best ceramide percentage for moisturizers. The ceramide types, their combination with other lipids, and the finished cream matter more than a headline number.
Choosing a strength: Look for a comfortable moisturizer with evidence for the complete product. A stated ceramide-blend percentage may include ingredients other than pure ceramides.
Higher strengths: More ceramide is not automatically more barrier repair. A percentage cannot substitute for clinical performance or good tolerance.
Formula matters: Ceramides work within a lipid mixture, often with cholesterol and fatty acids. A study of one cream does not validate all ceramide creams.
Licorice root extract contains multiple compounds, including liquiritin and glabridin. Whole-extract percentages do not reveal the dose of these individual compounds.
Choosing a strength: Look for the named extract or purified compound and evidence for the finished product.
Higher strengths: There is no established universal percentage range or proof that higher whole-extract concentrations improve pigmentation.
Formula matters: A small study of liquiritin cannot establish a recommended strength for every licorice extract, species, or formulation.
Approximate windows, not promises.
First few weeksSkin may feel softer soon after use; relief depends on the formula.
First few weeksAssess tolerance first; pigment change is usually slower.
4–8 weeksJudge hydration, comfort and whether dryness is recurring.
4–8 weeksSome studied regimens begin showing pigment improvement.
8–12 weeksPersistent cracking, itch or a rash needs reassessment.
8–12 weeksA useful review point for benefit and irritation.
3–6 monthsContinue if comfortable; hydration usually requires ongoing use.
3–6 monthsMany melasma trials assess results over three to four months; recurrence is common.
6–12 monthsMoisturizing does not establish reversal of structural ageing or scars.
6–12 monthsLong-term use depends on the active; follow a monitored plan rather than extending treatment automatically.
Usually well tolerated; fragrance, preservatives or other ingredients may irritate.
Botanical extracts can cause allergy or stinging; check the complete formula.
Stop for persistent burning, swelling, blistering or a new rash. Seek urgent care for breathing difficulty or a severe allergic reaction.
Stop for persistent burning, swelling, blistering or a new rash. Seek urgent care for breathing difficulty or a severe allergic reaction.
Choose a simple formula and test a small area first. Individual tolerance matters more than an ingredient’s reputation for being gentle.
Choose a simple formula and test a small area first. Avoid actively inflamed or broken skin unless the product is specifically directed for it.
Do not use a cosmetic product as a substitute for diagnosis of an unexplained, changing or persistent skin problem.
Do not use a cosmetic product as a substitute for diagnosis of an unexplained, changing or persistent skin problem.
Ceramide moisturizers are generally considered acceptable in pregnancy.
Data are limited; ask the clinician managing your pregnancy.
On the skin. The finished product delivers ceramides in a particular vehicle.
Entering skin. No single molecular mass. The 500 Da guideline cannot be applied to this whole ingredient family or mixture.
Conversion. No activation step is established as necessary for its intended topical role.
Skin response. Ceramides are part of the lipid material between outer skin cells; a well-formulated moisturizer can support barrier function.
Additional effects. Proposed pathways do not establish a measured depth of delivery or clinical benefit beyond the studies cited.
On the skin. The finished product delivers licorice root extract in a particular vehicle.
Entering skin. No single molecular mass. The 500 Da guideline cannot be applied to this whole ingredient family or mixture.
Conversion. No activation step is established as necessary for its intended topical role.
Skin response. Compounds such as liquiritin and glabridin have different pigment-related actions; they are not interchangeable extracts.
Additional effects. Proposed pathways do not establish a measured depth of delivery or clinical benefit beyond the studies cited.
Choose for dry or eczema-prone skin; judge the complete moisturizer.
A 64-child trial found fewer or later eczema flares with a ceramide-containing regimen versus body wash alone. Another small trial did not show superiority over a petrolatum-based moisturizer; ceramides are not automatically better.
Consider as an optional pigment ingredient; independent clinical evidence is limited.
A 20-woman split-face study tested a specific liquiritin cream for four weeks with sun protection. It does not establish that all licorice extracts treat melasma or rosacea.
Sources