FORMULA.FIVE™ by Keratin Revolution is a next-generation leave-in molecular repair treatment designed to rebuild and restore damaged hair from the inside out. Powered by our exclusive Re:Link™ Complex, five active molecules work together to repair bonds, reconnect proteins, smooth the cuticle, and lock in lasting shine — all in just 5 min
4.3
18 ratings
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Amazing product worth investing in - works wonders on my very fine fragile hair with no heavy residue
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Louise · August 18, 2026
I have resolution shampoo and conditioner also silk smooth all of the products are Fab! I have just tried formular five once and it matches the other products Great!
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Georgina · July 8, 2026
So far only used once so far so good smells nice and hair feels soft