Size Rx Penile Enhancement Formula is a topical lotion that was specifically formulated to last up to 24 hours, and to help open blood vessels and expand capillaries. This formulation improves sensation and firmness. Even without an erection you will notice more fullness and added size. Latex condom compatible and sex toy friendly! Ingredients: Deionized water, Aloe Vera gel, safflower oil, vegetable derived emulsifying wax, arginine hcl, allantoin, triethanclamine, lecithin, polysorbate 80, carbopol, methylparaben, sodium EDTA, propylparaben, menthol, zinc chelate, propylene glycol, yohimbe extract, maca extract, tribulus terresteris extract, saw palmetto extract, epimedium extract, fragrance.