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Hop in the shower and shampoo your hair as you normally would. Soap up your hair and gently massage the shampoo into your scalp. Then rinse the shampoo out completely. After you finish shampooing, towel-dry your hair thoroughly. 3 and let it sit for 10-30 minutes. Pour a nickel-sized amount of the Olaplex No. 3 solution into your hands and massage it into your scalp, just as you would with regular shampoo. Be sure to comb the serum through all of your hair, saturating all of the strands as you go. Let it sit for the required amount of time.  Leave the Olaplex No. 3 in your hair for at least 10-30 minutes. If your hair has recently been dyed or otherwise damaged, consider leaving it in for an hour or two. You may want to put on a shower cap to keep the serum from touching your clothes or other items in your home while you wait out the clock. After the allotted amount of time, hop back in the shower and rinse out the Olaplex No. 3 treatment with warm water. Then, shampoo and condition your hair as you normally would. Once you get out of the shower, your hair should be silky smooth, healthy, and ready to be styled! For the best results, you should keep applying Olaplex to your hair every 10 days after you're initial treatment at the salon. Reapplying the Olaplex No. 3 solution will help keep your hair smooth and healthy.

Summary:
Shampoo and towel-dry your hair normally. Apply Olaplex No. Rinse the treatment out and shampoo your hair. Repeat the treatment once every 10 days.