Tom Rinks spent years in advertising before founding Sun Bum in 2010, and it shows in everything about this brand — from the grinning ape mascot to the way a basic aloe vera gel feels like something you would find in a surf shop rather than a pharmacy aisle. The Cool Down Aloe Vera Gel is not a complicated product. It is aloe, glycerin, tea tree oil, vitamin E, and water in a squeeze bottle. But the details of how it is put together — and what it leaves out — make it genuinely better than the green goop most people grab without thinking.
The most meaningful difference between Sun Bum's gel and the standard drugstore aloe is what is not in the formula. Most cheap aloe gels use alcohol (ethanol or isopropyl alcohol) as a primary preservative and quick-drying agent. On intact skin, that alcohol evaporation creates a pleasant cooling sensation. On sunburned skin, it stings on contact and further dehydrates tissue that is already struggling to retain moisture. Sun Bum uses phenoxyethanol and ethylhexylglycerin instead — a preservative system that does its antimicrobial job without any of the drying or stinging.
The base of the formula is water and glycerin, with aloe barbadensis leaf extract as the third ingredient. This is worth noting transparently: aloe is not the primary ingredient by volume. Water and the humectant glycerin make up the bulk of the formula, with aloe providing the targeted soothing and anti-inflammatory activity. This is standard for commercial aloe gels — even products marketed as '100% pure aloe' are typically referring to the aloe source, not the concentration — but it is worth understanding that you are getting a glycerin-based hydrating gel with aloe as the active soother, not the other way around.
The tea tree oil inclusion is a small but thoughtful addition. Sunburned skin has a compromised barrier — the UV radiation has damaged the stratum corneum and disrupted its antimicrobial defenses. Tea tree oil (Melaleuca alternifolia) provides broad-spectrum antimicrobial activity that helps protect this vulnerable skin from opportunistic bacteria. It is present in trace amounts (low on the INCI list), enough to provide protective benefit without the irritation that concentrated tea tree oil can cause.
Vitamin E (tocopheryl acetate) rounds out the active ingredients with antioxidant support. UV exposure generates a surge of free radicals in the skin, and applying an antioxidant in the hours following sun exposure can help mitigate some of that oxidative damage. The benefit from a single ingredient in a topical gel is modest, but it is a sensible inclusion for an after-sun product.
Texturally, this is a lightweight, translucent green gel that spreads easily over large body areas — back, shoulders, legs — without requiring much product. It absorbs moderately quickly but leaves a tacky film for about thirty to sixty minutes. This is the product's main texture complaint, and it is a real one. If you apply this and immediately put on a shirt, you will feel it. The tackiness dissipates fully, but the transition period is noticeable and slightly annoying.
The green color, incidentally, comes from synthetic dyes (Yellow 5 and Blue 1), not from aloe concentration. Pure processed aloe vera extract is nearly colorless. The dyes create the visual association consumers expect from an aloe product, which is harmless but worth knowing — the color is marketing, not a quality signal.
Sun Bum recommends refrigerating the bottle for enhanced cooling, and this tip genuinely improves the experience. Applying cold gel to hot, sunburned skin provides a level of immediate thermal relief that room-temperature product cannot match. If you use this product regularly during summer, keeping it in the fridge is the single best thing you can do to maximize its effectiveness.
Performance on actual sunburn is reliable. Applied to mild to moderate sunburn, the gel reduces heat and redness within the first hour. Consistent application over two to three days significantly reduces peeling compared to untreated sunburn. It will not reverse sun damage or prevent all peeling from a significant burn, but it meaningfully shortens the uncomfortable recovery period and keeps skin more hydrated throughout.
The scent is minimal — a faint herbal note from the tea tree oil that dissipates quickly. No added fragrance means no competing with your sunscreen or moisturizer scent, which is appreciated in a body product applied to potentially large areas.
At $11.49 for 8 ounces, the pricing is fair. It costs more than the cheapest drugstore aloe gels ($3-5 for comparable sizes), but the alcohol-free formulation, tea tree oil, and vitamin E provide genuine value over those basic options. For a product you might go through a bottle or two of during a beach vacation, the price is a non-issue.
The Sun Bum Cool Down Gel is not going to change anyone's life. It is an after-sun gel that works well, avoids the mistakes that cheap aloe gels make, and comes in cheerful packaging that looks at home in a beach bag. For what it is — a simple product done right — that is enough.
