I leave on overnight rather than the stated ten minutes and the next day my hair feels noticeably softer, stronger and not greasy at all.

I bought this to stop the slight breakage of my hair that occurs when washing it as I have very long, thick over-dyed hair... however this product has left it in a worse state than it was previously! My hair looks so frizzy and fly away but feels greasy to the touch even several washes later! Please please do not waste your money on this over-hyped completely useless product.

Fab product!!! My blonde highlighted mid-length hair looks and feels so healthy. It is expensive but it works. I use it once a week, placing it on my hair overnight. Will try shampoo and conditioner next. Give it a go - your hair will feel like you just stepped out of a salon.

I’m using all the Olaplex products because are the best!

I love this product. Can’t recommend it enough.