Sephora Play! Beauty Box is a monthly subscription for makeup, skincare, haircare, and other beauty products. Like other beauty boxes such as Ipsy and Birchbox, the Play! by Sephora box costs $10 a month and contains items curated just for you. Sephora debuted this box around September of 201. It's just now starting to become as popular as the other major beauty box subscriptions. This may be …