Résistance Extentioniste Our hair care collection rebuilds weak hair and damaged hair, while restoring the hair fiber, repairing the effects of heat styling and preventing hair breakage in over-processed hair. Bain Extentioniste Shampoo $20.50 – $35.50 Sales Tax Masque Extentioniste Hair Mask $26.50 – $62.50 Sales Tax Extentioniste Thermique Blow Dry Primer $22.50 – $37.50 Sales Tax Fondant Extentioniste Conditioner $24.50 – $40.50 Sales Tax Sérum Extentioniste Scalp & Hair Serum $51.50 Sales Tax