Not only was this elixir so effective that it was nominated in the skin-care category of Refinery29's Beauty Innovator Awards , but it'll also cost you less than $10. Unlike other retinoids, this one hydrates like a moisturising serum and reduces fine lines while staying within your beer budget. Even better: You don't need a prescription to buy it. It's so good, it may just convince you to not copy the rest of her $1,853.49- worth shopping list — because that's what was stopping you, right?