OGX Thick & Full + Biotin & Collagen Conditioner It's pretty standard to wait until after washing to apply a conditioner like OGX Thick & Full + Biotin & Collagen Conditioner ($6), but it also works pre-wash, as it contains biotin and wheat protein that can strengthen and moisturise the hair before you apply shampoo. Image Source: target.com OGX Thick & Full + Biotin & Collagen Conditioner $6 from target.com Buy Now