Regenerist Retinol24 Night Serum : love it for breakouts

I've had this stuff for a year now. It last so long. I only use it when I get breakout which is usually that time of the month. And this stuff in just 2 days get's rid of the pimples. I don't use it everyday which I don't think your suppose too. I could be totally wrong. But for me I use CeraVe as a overall face cream and on certain days I'll use the rental serum. It also smooths out the skin beautifully. I wake up to glowing skin which is so nice to see it has no smell or stinging. I do have sensitive-ish skin this doesn't bother my skin what so ever. I don't wear it under makeup. I use all my face creams at night. I do have combination skin mostly oily i plan on buying more soon sense I'm almost out. It's wonderful, if you are sensitive maybe try and do this serum once a week to kinda incorporate it into your skin routine hope this helps.