olaplex #3 saved my hair

Do you know if you can use it if you have gotten a Keratin treatment? I really want to try it!
I used the #3 and just followed the instructions on the bottle. Leave it in for 10 minutes then washed it out. I used it 3 times now (basically every other day or every 2 days) and I can really see/feel a difference.
oh they have numbers?!
I've been meaning to try this! Is it like a deep conditioner? How long did you leave it in your hair for?
This product was mentioned in a sephora sale post a few weeks ago. I tried it and it really works! My hair is way less frizzy and damaged looking and feeling.
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