Suitable for damaged and over-processed hair, the Resistance Therapiste Soin from Kérastase is a lightweight conditioner developed for use before shampooing, but can also be used after cleansing if preferred. Effectively forms a protecting film onto hair fibres to shield from washing and further damage, leaving you with luscious, healthy locks. Its unique FIBRA-KAP formula regenerates keratin associated proteins (KAPs) to repair hair structure and restore moisture.