OGX Thick & Full + Biotin Collagen Extra Strength Volumizing Shampoo with Vitamin B7 Hydrolyzed Wheat Protein for Fine Hair. Sulfate-Free Surfactants Thicker, Fuller Hair, 13 Fl Oz

Customers find this shampoo effective at thickening hair for up to 24 hours and giving it volume, while also making it soft with a rich, foamy texture. The product receives positive feedback for its shine and pleasant scent, though some customers report it makes their hair feel greasy and oily. Customers disagree on whether it helps with hair growth.

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