Reviews of Ovation hair products are generally positive and indicate that the products improve the appearance and texture of hair, as of 2015. Some of the same reviews also note that the products do not stimulate hair growth.
Ovation's Cell Therapy Hair Treatment claims to make the user's hair thicker and healthier looking and inhibit hair loss to some degree. Customer reviews of the product on OliviaIrene.com and TheBeautyBrains.com indicate that the product does improve the look and feel of the hair and scalp. These reviews also note that Ovation products do not cause hair growth or regrowth, but the company does not explicitly claim that its products provide such results.