La Roche-Posay

Lipikar AP+ Lipid-Replenishing Cream

Name: La Roche-Posay - Lipikar AP+ Lipid-Replenishing Cream
Brand: La Roche-Posay

Efficacy 75/100·Low irritancy

Efficacy measures how well the formula delivers the claims the brand advertises · 1 of 1 advertised claim delivered

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Product claims breakdown

Moisturizing

4 ingredients contribute at the levels below

Good evidence

This product can help improve hydration of the skin with the two types of ingredients.

The first type is called “humectants”:
these ingredients help attract water. When humectants are on the surface of the skin, they “pull in” the moisture from the outside environment, or from within deeper layers of the skin. The following ingredients in this product do the job: glycerin, caprylyl glycol.

This product also contains ingredients called “occlusives”. They help reduce the speed with which our skin loses moisture to the outside environment. These ingredients also help soften the upper layer of the skin, so it feels less tight and nicer to the touch. The following ingredients in this product do the job: butyrospermum parkii butter, myristyl myristate.

NIACINAMIDERole: Under-dosedIs proven to be effective in reducing blemishes, evening out skin tone and helping to improve lines and wrinkles. It helps the skin to repair sun damage, calm down inflammation and keep maintain good levels of moisture. The concentration of about 2% is effective for supporting the skin barrier and evening out the skin tone. Concentration of 4-6% is better for helping with acne and balancing the sebum production~0.95–1.45%

BUTYROSPERMUM PARKII BUTTERRole: Key activeA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicals~2.8–4.2%

GLYCERINRole: Key activeOne of the best moisturizing ingredients. Naturally present in skin. It attracts water to the upper layer of the skin working as a humectant~4.2–6.3%

MYRISTYL MYRISTATERole: Key activeAn emollient. Is not recommended for acne-prone skin as it can be comedogenic~1.4–2.1%

Irritancy

8 mild flags; all low irritation

Low risk

We flag 8 ingredients with theoretical low-level irritation potential — at these levels none are a concern for most skin.

IngredientFunctionIrritationEst. amount

Isopropyl palmitateHelps soften the upper layer of the skin and create a thicker product consistencyLow~3.6–5.4%est.

Myristyl myristateAn emollient. Is not recommended for acne-prone skin as it can be comedogenicLow~1.4–2.1%est.

Zea mays starchUsed to thicken the product's consistencyLow~1.1–1.7%est.

Ophiopogon japonicus root extractPlant extract that might help neutralize free radicals and support skin barrier function, but research on its effectiveness in skin is lackingLow~0.6–1.4%est.

HydroxyacetophenoneUsed to increase effectiveness of preservativesLow~0.2–0.75%est.

Caprylyl glycolHelps preserve products and creates a nice product textureLow~0.2–0.75%est.

Citric acidCan work as an exfoliant but is typically used to adjust the product pHLow~0.05–0.3%est.

Polyglyceryl-3 methylglucose distearateHelps water and oil mix togetherLow~0.05–0.2%est.

Comedogenic

4 ingredients can clog pores in acne-prone skin

High risk

These ingredients have a comedogenic rating ≥ 2. In leave-on products at higher concentrations they can clog pores for acne-prone skin types.

IngredientFunctionRatingEst. amount

Isopropyl palmitateHelps soften the upper layer of the skin and create a thicker product consistencyHigh~3.6–5.4%est.

Butyrospermum parkii butterA great moisturising ingredient that softens the skin and reduces water loss from its upper layer. It also can be helpful in protecting skin from free radicalsHigh~2.8–4.2%est.

Myristyl myristateAn emollient. Is not recommended for acne-prone skin as it can be comedogenicHigh~1.4–2.1%est.

Zea mays starchUsed to thicken the product's consistencyHigh~1.1–1.7%est.

~ marks concentrations estimated from label position and typical use levels