Question: what is the difference between olaplex 1 and 2?
Answer: Olaplex nr 1 is mixed with a hair die and then applied to your hair. ... After the designated hair colour is developed and washed off olaplex no 2 is applied and left for 20 min. The hair is shampooed and a hydrating mask is applied. You really have to believe me when I say that the difference is unbelievable!