This luxurious shampoo and conditioner duo from is the perfect solution to promoting hair growth and strength. Destined For Density™ MegaStrength+ Caffeine + Biotin Peptide Density Shampoo + Conditioner Duo is formulated with powerful ingredients such as caffeine and biotin peptide that work together to nourish, strengthen and protect your hair. With this duo, you'll have stronger, fuller and healthier looking hair in no time.