Do you have to wash hair before Olaplex 3?
Ava Arnold
Updated on January 12, 2026
Generally, no, you do not need to shampoo before using No. 3. However, if you have a lot of product on your hair, it is always a good idea to cleanse the hair before your treatment.
Should I use Olaplex 3 before or after washing?
An Olaplex No. 3 Hair Perfector treatment should always be followed by a thorough rinse and shampoo. However having said that if your hair is really comprimised then get a very small amount and apply it to your hair and blowdry in. This works really well for curly hair where the curl has dropped out.Can I put Olaplex on dirty hair?
Apparently, you are supposed to shampoo your hair first before applying the Olaplex. This is to remove the buildup of dirt as Olaplex can't penetrate dirty hair as effectively. Once you have shampooed and rinsed, you can then apply the Olaplex.Can you put Olaplex 3 on dry hair overnight?
You shouldn't leave Olaplex 3 on your hair overnight. According to the Olaplex website, you should leave Olaplex 3 on your hair for at least 10 minutes, but you can leave it on for up to 90 minutes.Can you leave Olaplex 3 on too long?
People have used Olaplex 3 for more than 12 hours without ill effects, but that doesn't mean you can expect the same. If you leave Olaplex 3 on for longer than 90 minutes, you could experience several issues, from an irritated scalp to eye irritation, redness, and stinging.OLAPLEX | REVIEW | HOW TO USE | DAMAGED HAIR
Does Olaplex work better on clean hair?
4 Bond Maintenance) to rid your hair of oil and build up, or if you feel your hair is already clean enough, you can apply Olaplex to dry hair. However, if you apply dry, you'll need more product to thoroughly saturate the hair. Apply a good amount to towel dried (or dry as mentioned above) hair and comb through gently.Can Olaplex 3 damage your hair?
Apparently no. Olaplex cannot damage your hair, no matter how often you use it. Some users have reported that when they use it for long periods, the amount of time it requires to “take effect” will climb and climb.How long does Olaplex 3 take to work?
No.3 – Hair PerfecterAt home, you need to apply Olaplex No. 3 to damp, towel dried hair and leave it in for at least 10 minutes – the longer you leave it in, the better.