H2O Plus has it all: skin care, bath and body, even shampoo and conditioner. And the vast range of products contains dozens of ocean-sourced ingredients from blue sea kale to plankton.

Star product: H2O Plus Aquafirm Micro-Collagen Eye Cream, $38. Packed with brown algae and marine microspheres (a deeply penetrating moisturizer), this works wonders on crow's feet.

If you prefer organic products, you'll love OSEA. This family-run brand incorporates USDA certified organic algae into its formulations, and the line is completely vegan. It's available primarily in spas (as well as online)

Star product: OSEA Vitamin Sea Serum, $68. Seven organic seaweeds in an ultra-moisturizing hyaluronic acid base.