Isle SPF 50 vs. Solstice Daily SPF: One Beach Weekend, Two Face Sunscreens
We packed both for a long weekend in Montauk and made four editors trade sides. Reapplication, white cast, and the sunglasses-slide test decided everything.

Truly invisible on all four skin tones. Reapplied over makeup without a fight.
Check Price
The better clean formula and reef-safe pick — but it demands a full rub-in.
Check PriceSide by side
Solstice wins the beach weekend — invisible, reapply-friendly, and nobody reached for anything else by day two. Isle remains the pick for strict mineral loyalists and sensitive skin.
Check Solstice pricingFace SPF is the one step every celebrity facialist agrees on — the women with the most photographed skin in the world, from Jennifer Lopez’s longtime glow team to the derms quoted in every summer beauty issue, all say the same thing: the best sunscreen is the one you’ll actually reapply. So we took the two most-requested formulas to Montauk and made reapplication the whole test.
How we tested
Four editors across four skin tones spent a three-day beach weekend alternating sides of their faces, morning application at the rental house and reapplication at 1 p.m. on the sand. We logged white cast in direct sunlight, tackiness at the hour mark, and whether either formula survived a swim plus a towel-off.
Day three was the decider: full face of makeup in the morning, then a mandatory midday reapplication right on top. Isle’s mineral veil pilled on two of four testers; Solstice layered cleanly on all four. Nobody got burned on either side — both formulas do their actual job — but the bottle everyone grabbed on the checkout morning was the hybrid, and it wasn’t close.
Comments (6)
Sorted by topThe sunglasses-slide test is the most honest SPF criterion I have ever read. Every sunscreen I've loved has failed it.
Thank you for testing on multiple skin tones. 'No white cast' claims mean nothing when the whole test panel is fair.
Isle devotee here. The rub-in is 30 seconds of my life I'll gladly trade for a fully mineral formula.
Reapplying over makeup is the whole battle and nobody talks about it. Solstice just moved to the top of my list.
One weekend is a fun test but SPF is a long game. Would love a three-month follow-up on texture changes.
Both are reef-safe according to your own table, so the 'clean' edge for Isle feels a little generous.