Ingredient review
Glycereth-7 Lactate
INCI: GLYCERETH-7 LACTATE
A mild, effective humectant that hydrates without clogging pores, suitable for most skin types.
In plain English
Glycereth-7 Lactate is a water-soluble ingredient made by combining glycerin with lactic acid. It works like a sponge to pull moisture from the air into your skin, helping it stay soft and hydrated. Because it's derived from glycerin (a common moisturizer) and lactic acid (a gentle exfoliant), it offers mild smoothing benefits without irritation. It's often used in lightweight lotions and serums for daily hydration.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Glycereth-7 Lactate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Glycereth-7 Lactate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
Glycereth-7 Lactate is a semi-synthetic compound created by reacting glycerin (a natural humectant) with lactic acid (an alpha hydroxy acid). The result is a larger molecule that is less likely to penetrate deeply, making it gentler than plain lactic acid while still providing hydration and mild exfoliation.
How it works
When applied to the skin, Glycereth-7 Lactate attracts water molecules from the environment and the deeper layers of skin, holding them on the surface. This increases the water content in the outer skin layer, reducing dryness and flakiness. The lactate portion also gently loosens dead skin cells, promoting a smoother texture without the sting often associated with stronger acids.
Pros
Gentle hydration
Attracts moisture without the sting or irritation of stronger acids, making it ideal for sensitive or dry skin.
Mild smoothing effect
Helps soften rough patches and improve skin texture over time, even in low concentrations.
Cons and cautions
Sticky feel in humidity
In very humid environments, high concentrations may leave a slightly tacky residue on the skin.
Mild exfoliation only
For significant exfoliation, you may need a stronger AHA like glycolic acid; this ingredient is best for maintenance.
Best for
- People with dry or dehydrated skin looking for gentle hydration
- Those with sensitive skin who want mild exfoliation without irritation
Use caution if
- Individuals with known allergies to glycerin or lactic acid derivatives (rare)
Usage tips
Safety summary
Glycereth-7 Lactate is considered safe for cosmetic use with a low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin, and has no known significant safety concerns at typical concentrations.
Research notes
Research on Glycereth-7 Lactate is limited but consistent with the known safety profiles of its components (glycerin and lactic acid). It is recognized as a mild humectant and skin conditioner in cosmetic formulations.
Common label clues
- Typical concentration
- 1% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and other major markets. No known restrictions at typical use levels.
- Common uses
- Moisturizers, Serums, Toners, Cleansers
- Environmental note
- Glycereth-7 Lactate is biodegradable and typically produced from renewable glycerin sources, though the manufacturing process involves synthetic steps.
Good to know
- Glycereth-7 Lactate is often found in 'hydrating' or 'smoothing' products and is considered safe for daily use.
- It is less likely to cause breakouts than some other humectants because it is non-comedogenic.
Common questions
What is Glycereth-7 Lactate in beauty products?
Glycereth-7 Lactate is a water-soluble ingredient made by combining glycerin with lactic acid. It works like a sponge to pull moisture from the air into your skin, helping it stay soft and hydrated. Because it's derived from glycerin (a common moisturizer) and lactic acid (a gentle exfoliant), it offers mild smoothing benefits without irritation. It's often used in lightweight lotions and serums for daily hydration.
What does Glycereth-7 Lactate do in a beauty product?
When applied to the skin, Glycereth-7 Lactate attracts water molecules from the environment and the deeper layers of skin, holding them on the surface. This increases the water content in the outer skin layer, reducing dryness and flakiness. The lactate portion also gently loosens dead skin cells, promoting a smoother texture without the sting often associated with stronger acids.
Is Glycereth-7 Lactate safe for most people?
Glycereth-7 Lactate is considered safe for cosmetic use with a low irritation and comedogenic risk. It is well-tolerated by most skin types, including sensitive skin, and has no known significant safety concerns at typical concentrations.
Who should be careful with Glycereth-7 Lactate?
Individuals with known allergies to glycerin or lactic acid derivatives (rare)
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.