Farouk Silk Therapy Conditioning Balm Biosilk Silk Therapy Condiitioning Balm. Unveil Stronger, Silkier Hair. Specially formulated to nourish and replenish moisture to each hair strand while restoring hair's manageability. Silk proteins help strengthen weak strands to keep hair in optimal condition even after chemical services. Use as a deep conditioning treatment on hair that is overly processed, dry or damaged to restore shine, smoothness and elasticity. deep conditioning treatment formulated to nourish and replenish moisture silk proteins strengthen weak strands restore shine, smoothness and elasticity