There are many waterproof products out there and Some might already be in your Make-up bag.  Do this Simple test ....Apply or swatch the product (Eyeshadow,foundation,eyeliner,lipstick )in your hand and run a luke warm water in your hand for at least 5 minutes and see if it washes away ! Here are some of the Waterproof Drugstore Make-up I used and Recommend. Not all were waterproof but It works P.s I usually go for more earthy tone eyeshadows while I swim just incase I forget and end up rubbing my eyes hard! Foundation : LOreal True Match Foundation / Almay 16 hour long lasting liquid foundation Eyebrow Pencil : Maybelline New York 'Medium Brown' Pencil Cream Eyeshadow : Maybelline New York '05 Flash of Forest '/ Revlon Bronze Eyeshadow : Cover girl Eye Enhancers (Almost any highly pigmented Eyeshadows will stay on under water ) Black Eyeliner : Maybelline Unstoppable Mascara : Covergirl Lash blast Blush : Jemma Kidd 02 Masquerade( Try any Creme blush) Lipstick : 24 Hour super stay Maybelline New York 'So Pearly Pink' / Lipstains My Ruffle Swimsuit was from Ebay $20