Apply to clean, damp hair from the mid-lengths to the ends, then work a small amount into the roots too. Massage through with your fingers and leave for 10 minutes. Rinse and style as usual. Start with one pump for shoulder-length hair. Use more on longer, thicker hair and less on short or fine hair.

Olaplex was founded through a collaboration between two doctors, Dr Eric Pressly and Dr Craig Hawker. Drawing on their expertise in materials chemistry and rigorous research, the team of scientists developed a substance that reconnects damaged hair bonds during and after a treatment. The original professional haircare range contains an ingredient that repairs hair without silicones or mineral oils. Olaplex products have revolutionised haircare. Their high-quality formulas and professional service have made the brand popular with customers around the world. Celebrities including Katy Perry and Kim Kardashian use Olaplex.