The percentage, I don't know. But to me, it didn't matter. Retin-A Micro at any concentration caused massive redness in my skin, all over - but this product did not cause redness AND it also reduced (and removed) many of my fine lines! It's even keeping my breakouts away. It took about 4 weeks of use (3 weeks of sample packs used every other day, plus about 4 days in a row of using the full-size bottle daily), but my smile lines are GONE and forehead lines are going away more every day. If I were you, I'd just go for it.
answered 1 year, 2 months ago
No percentage is given, but I would say it gives similar results to a .75% product I was using before. I use a serum before applying this and have found I can use it every night with great results. No redness, no peeling- just expression lines starting to disappear and better tone.