Pool days are synonymous with sun, water, and fun—but also with the need for smart skincare. Traditional sunscreens and the new wave of cannabis-infused skincare serve very different purposes, even though both are now part of many beach and pool routines. Understanding how they work and how they differ helps you make informed choices for healthy, protected skin.

Traditional SPF (Sun Protection Factor) measures how well a product shields skin from ultraviolet B (UVB) rays, the type that causes sunburn. “Broad-spectrum” sunscreens also guard against ultraviolet A (UVA) rays, which contribute to premature aging and deeper skin damage. These products use one of two active ingredient families: mineral filters like zinc oxide and titanium dioxide or organic “chemical” filters such as avobenzone, octocrylene, and homosalate. Minerals sit atop the skin, scattering and reflecting UV light, while chemical filters absorb UV radiation and convert it into heat energy. Both approaches are proven safe and effective when applied correctly and reapplied every two hours or after swimming.

Cannabis skincare, on the other hand, isn’t formulated to block UV rays. Instead, it features ingredients derived from the cannabis plant, such as hemp seed oil or cannabidiol (CBD). Hemp seed oil is pressed from seeds and contains no cannabinoids, but it’s rich in omega fatty acids, linoleic acid, and vitamin E—nutrients that help strengthen the skin’s barrier and lock in moisture. CBD, derived from the plant’s aerial parts, is being studied for its antioxidant and anti-inflammatory benefits. Early research suggests that CBD may help reduce redness, calm irritation, and minimize oxidative stress caused by sun exposure, but it is not approved by the FDA as a UV-protective ingredient.

Where SPF ingredients are designed to stay on the surface of the skin to absorb or deflect UV light, cannabinoids behave differently at a molecular level. Cannabinoids like CBD are lipophilic—oil-loving—and relatively large, which means they tend to remain in the upper layers of the skin rather than penetrating deeply. Unless formulated with penetration enhancers, nanoemulsions, or transdermal systems, most CBD in lotions and oils stays near the surface, where it helps soothe and hydrate. Sunscreens, meanwhile, are engineered to form a uniform, water-resistant film that shields against UV exposure during swimming or sweating.

Using both together can offer complementary benefits. A broad-spectrum, water-resistant SPF 30 or higher remains essential for preventing sunburn and long-term damage. Apply it generously about 15 minutes before swimming and reapply every two hours, or after drying off with a towel. Once sunscreen has set, layering a CBD or hemp seed oil product can replenish hydration and help calm skin after sun exposure. Hemp oil’s essential fatty acids help reduce moisture loss, while CBD’s antioxidant potential supports recovery from oxidative stress.

However, it’s best to avoid mixing them directly or applying cannabis-infused oils before sunscreen, since oils can dilute SPF films and reduce protection. Let sunscreen fully absorb before topping with cannabis moisturizers. When shopping, look for non-comedogenic and fragrance-free formulations if you’re prone to irritation or acne, and don’t rely on marketing terms like “reef-safe” or “natural,” which aren’t standardized for UV defense.

For pool lovers, think of traditional SPF as your armor and cannabis skincare as your comfort system. Sunscreen prevents sunburn and UV damage; cannabis ingredients help your skin stay calm, hydrated, and resilient after a day under the sun. Together, they make for a balanced approach that keeps your skin protected, soothed, and glowing—so you can enjoy every splash and sunset without worry.