Josie Maran Argan Beta-Retinoid Pink Algae Serum If your face hasn't responded well to other retinol products (or if sensitive skin makes you scared to try it), other Sephora shoppers are recommending this Josie Maran Argan Beta-Retinoid Pink Algae Serum ($68). It actually gets its pro-retinol serum from beta-carotene-rich pink algae . . . and not a chemical. Image Source: sephora.com Josie Maran Argan Beta-Retinoid Pink Algae Serum $68 from sephora.com Buy Now