Amazon’s Prime Big Deal Days includes a range of beauty and personal care items, from Korean skincare staples like the Biodance Bio-Collagen mask at $14 to the Marc Jacobs Daisy Dream Eau de Toilette at $102. Shoppers can also find deals on hair growth supplements and the Waterpik Aquarius water flosser at $50, covering skincare, haircare, and oral care in one sale. Sale ends October 7. Shop Now at Amazon