A night peel serum that clears spots, tightens pores and smooths marks
La Roche-Posay Effaclar Ultra Concentrated Serum is an anti-blemish serum for adults with acne-prone skin, designed to purify, reduce imperfections, refine skin texture and soften fine lines. It combines three exfoliating acids: glycolic acid to resurface and even out marks, salicylic acid to unclog pores, and LHA (capryloyl salicylic acid), La Roche-Posay's gentle micro-exfoliant. Niacinamide helps soothe the skin and limit redness left by spots. Used in the evening, it leaves the skin clearer, smoother and more even over the weeks.
The texture
A light, fluid serum that spreads easily and absorbs quickly without feeling sticky or greasy. It is shaken before use.
Who it suits
- Adults with acne-prone skin
- Blackheads, spots and enlarged pores
- Uneven texture and post-blemish marks
- Oily skin also showing first fine lines
Worth knowing before you buy: this serum contains acids and alcohol and can tingle at first; space out applications if the skin feels uncomfortable, avoid the eye area and wear an SPF15 or higher during the day. It is fragranced.
How long one bottle lasts
Applied every evening, the 30ml bottle lasts about two months.
Complete the routine

Effaclar H Iso-Biome Cream
A soothing moisturiser to use with the serum.
Shop →
Effaclar H Cleansing Cream
A gentle wash for skin under acid treatment.
Shop →Characteristics
- Texture: fluid serum
- Skin type: oily, acne-prone skin
- Concerns: blemishes, blackheads, enlarged pores, uneven texture, marks
- When to apply: evening
- Age: adults
- Main benefits: purifies, reduces imperfections, refines pores and texture, softens fine lines
How to use
Shake before use. Apply to the whole face in the evening, avoiding the eye contour. Use a sunscreen of at least SPF15 during the day and avoid prolonged sun exposure. If the skin feels uncomfortable, space out applications.
Active ingredients
- Glycolic acid: resurfaces and evens out skin texture and marks
- Salicylic acid: unclogs pores and helps reduce blemishes
- LHA (capryloyl salicylic acid): a gentle micro-exfoliant that refines pores
- Niacinamide: soothes the skin
Ingredients
aqua/water/eau · alcohol denat. · propanediol · glycolic acid · niacinamide · dimethyl isosorbide · pentylene glycol · salicylic acid · sodium hydroxide · PPG-26-buteth-26 · hydroxyethylpiperazine ethane sulfonic acid · citric acid · PEG-30 glyceryl cocoate · PEG-40 hydrogenated castor oil · PEG-60 hydrogenated castor oil · capryloyl salicylic acid · biosaccharide gum-1 · maltodextrin · phytic acid · polyquaternium-10 · parfum/fragrance
Formulations are updated by the manufacturer from time to time. Always check the packaging you receive.
Manufacturer information
Brand: La Roche-Posay Laboratoire Dermatologique
Address: 86270 La Roche-Posay, France
EAN: 3337875722827
