What I have been doing is... first have dry hair (which I love because it doesn't take time). You start putting it in your roots and work your way down the the ends. Because it is like water and super hard to keep it on your hair, I put my hair in a bun and squeeze the bottle in the bun, then squeeze the bun to get the liquid on all of my hair. I have found it is easier to keep it on my head and in my hair by doing it this way. You want to wet all of your hair with the liquid (not soaked or dripping. Don't use water or rinse). Leave it for at least 10 min. Then I put on N°3 once the hair is pretty covered and wet with the bonding treatment. Doing it this way made my hair super super soft and shiny! You can always watch some YouTube videos too. That is what I did :)

No, just does wonders to my hair. It has no color just helps it heal very well.

When will olaplex NO.1 be back in stock? I need it for my bleach mixture your hair comes out great any answer's would be 👌

No.0 is not the same as No.1. No.1 is only sold to licensed hair stylists. If you're looking for a bond repair, I use the One'n Only One Shot Bond Repair that I found in Sally's 🤷♀️