Rare Beauty Brands has acquired Dr. Dana Beauty, a nail care company, from Nu Skin Enterprises. A purchase price was not disclosed. Nu Skin ranks No. 17 in Happi's The Top 50. Other Rare Beauty brands include skin care brands Patchology and Plant Apothecary. Dr. Dana Beauty, named for founder Dr. Dana Stern, is known for its nail renewal system, which retails for $33. Stern’s private practice specializes in nail health, which she said is one-of-a-kind in the US. Stern will join Rare Beau...