La Roche-Posay Effaclar Ultra Concentrated Serum is a skincare product that is scientifically proven to help visibly reduce the appearance of imperfections, fine lines, and wrinkles. It is formulated to help manage the concerns of acne-prone and/or oily skin like enlarged pores, excess oil production, blackheads, and blemishes. The serum contains three complementary acids: LHA micro-exfoliates and helps stimulate skin renewal, salicylic acid deeply unclogs pores and reduces excess sebum, and glycolic acid renews skin surface and refines visible pores. Niacinamide also helps combat moisture loss and dehydration.

Positive reviews of the product mention that it is quick-absorbing, doesnt feel greasy, and works well for oily skin. It has helped to clear up stubborn acne and has been effective at smoothing and toning the skin. Some reviewers have also noticed a visible improvement in the texture of their skin and a reduction in the appearance of breakouts, blemishes, and imperfections over time.

Negative reviews mention that the product can be drying and may not work for everyone. One reviewer mentioned that the serum stung and burned their skin a little when first used. Another reviewer did not see a difference in their skin and did not like that the second ingredient is alcohol, which is very drying and not suitable for oily skin.

Ingredients in the La Roche-Posay Effaclar Ultra Concentrated Serum include:

• LHA
• Salicylic acid
• Glycolic acid
• Niacinamide

Overall, the La Roche-Posay Effaclar Ultra Concentrated Serum has received positive reviews for its effectiveness in managing acne-prone and/or oily skin concerns and reducing the appearance of imperfections, fine lines, and wrinkles. However, it may not work for everyone and can be drying for some skin types.