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Olaplaex will reconnect the broken disulfide bonds in your hair, it starts repairing the bonds before the chemical has a chance to wear them down. Kerastase has nothing to do with bond-rebuilding, they tackle primary issues you may have such as thinning hair, weak/brittle hair, prolonging colour/shine and moisture renewal. Olaplaex doesn't act as a conditioner and won't leave your hair feeling soft. Kerastase however tackles all the other issues like maintaining colour, adding density and protein and leaves your hair feeling conditioned and hydrated. @Kerastase Paris they are professional and will tell you exactly what you need.
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