Olaplex no 4 no 5 no 6 no 7

Olaplex = gold Olaplex is a line of hair repair, “bond building” treatments that's getting heaps of buzz in the hair community, especially with people who have damaged hair from excessive bleach. ... Here's the science behind how it “repairs” disulfide bonds in hair. Olaplex reconnect broken disulfide sulfur bonds in the hair.” The treatment is labelled a “bond multiplier”, which limits damage to hair during or after colouring.