Quick answer: Choose by texture for makeup, and by the water-resistance label for sweat.
- Kiero Prime Sun Gel SPF 40+ is the clearest fit for a light, fast-absorbing gel and is described for use under makeup.
- SKIN1004 Hyalu-Cica Water-Fit Sun Serum suits readers who prefer a thin, serum-like feel and dewy finish.
- Beauty of Joseon Relief Sun Aqua-Fresh suits readers who want a quick-absorbing, lightweight, hydrating finish.
- For prolonged outdoor sweating, choose sunscreen with a U.S. water-resistance label of 40 or 80 minutes; a texture claim cannot answer that question.
For a long, humid workday, Kiero Prime Sun Gel SPF 40+ is the clearest match for readers who want a lightweight, fast-absorbing, non-sticky daily gel; SKIN1004’s Hyalu-Cica Water-Fit Sun Serum offers a serum-like, dewy finish, and Beauty of Joseon Relief Sun Aqua-Fresh pairs a watery, quick-absorbing texture with an oily-and-combination skin listing.
A light texture describes feel, a foundation test addresses pilling in a named product pair, and a U.S. water-resistance label gives the tested interval for swimming or sweating.
How to compare sunscreen under makeup in humidity
A comfortable makeup base still needs sunscreen reapplication during a long stretch outdoors.
The FDA’s sunscreen labeling Q&A explains that “water resistant” claims depend on testing and state whether protection lasts 40 or 80 minutes while swimming or sweating. The U.S. sunscreen labeling rule, 21 CFR § 201.327, sets reapplication directions for those tested intervals, including after towel drying and at least every two hours.
An independent study of skincare-product pilling recorded different pilling rates across sunscreen and foundation layering steps. The researchers tested 10 base formulas with a coded sunscreen and foundation on 528 volunteers, then rated pilling on a 0–5 scale. Pilling appeared in 655 of 5,280 applications when sunscreen was layered over a base formula, and in 61 of 5,280 applications when foundation followed a base formula plus sunscreen. The coded products and defined layering sequence make these rates evidence about the tested steps, while each named sunscreen’s foundation match calls for direct product-pair evidence.
1. Kiero Prime Sun Gel SPF 40+: best for a light daily gel
Choose Kiero Prime Sun Gel when your priority is a lighter gel feel that fits a simple morning routine. The official product page lists broad-spectrum SPF 40+/PA++++, calls the texture lightweight, and says it is suitable alone or under makeup. The product description also identifies chamomile, azulene and panthenol in a light, fast-absorbing formula with a non-sticky feel. Its product page lists a regular price of $12.99 and a sold-out status.
Kiero lists fragrance in the ingredient list. Readers who avoid fragranced skin care can use that detail when choosing between the three, while readers seeking a lightweight gel can weigh it alongside the finish and SPF rating.
2. SKIN1004 Hyalu-Cica Water-Fit Sun Serum: best for a serum-like, dewy finish
Choose the Hyalu-Cica Water-Fit Sun Serum if you want a thin, lightweight layer and a dewy look. SKIN1004’s product page for the SPF 50+ PA++++ serum describes a non-sticky, serum-like texture, quick absorption and no white cast. These are useful clues for a reader who prefers a fluid sunscreen beneath a natural-glow foundation.
SKIN1004 lists a separate U.S. formula, Hyalu-Cica Water-Fit Sun Serum UV, with avobenzone 2.7%, homosalate 13.6%, octisalate 4.5% and octocrylene 9% as active ingredients.
SKIN1004’s fast-absorbing sunscreen and pilling guide reports a Corneometer hydration reading from forearm skin in a single visit, a measure of one-visit forearm hydration rather than facial foundation wear.
3. Beauty of Joseon Relief Sun Aqua-Fresh: best for a lightweight, hydrating feel
Relief Sun Aqua-Fresh is a good comparison point if you want a lighter, quick-absorbing sunscreen with a fresh finish. Beauty of Joseon’s Aqua-Fresh product page describes a watery, lotion-like texture, a non-greasy finish and rice seed water with panthenol; its comparison lists Aqua-Fresh for oily and combination skin. The brand’s Aqua-Fresh guide identifies the formula as SPF 50+ PA++++.
In Beauty of Joseon’s user panel results, testers described a watery, weightless feel and a skin-like finish; the maker reports that oily-skin panelists preferred its fast-absorbing feel.
Pick Aqua-Fresh when the lightweight, hydrating finish sounds more comfortable than a richer sunscreen feel. For a makeup decision, treat its published texture and panel feedback as fit clues, then compare it with your own foundation rather than reading “lightweight” as proof of pilling resistance.
What counts as real under-foundation evidence?
The strongest under-foundation evidence tests the exact sunscreen with the exact foundation, states the application amount and order, and reports whether pilling or separation occurred under stated conditions. A named-editorial wear observation is useful when it identifies both products and describes their layering and conditions; lightweight or makeup-friendly descriptions and general panel impressions describe texture or user preference.
In the 528-volunteer study, about 41% of volunteers (217 people) experienced pilling at some point; researchers observed three patterns, with pilling only when sunscreen went over a test product, only with sunscreen alone, or in both situations. Volunteers who experienced foundation pilling had lower sebum and hydration and smoother skin than volunteers who experienced sunscreen pilling.
If your day includes outdoor sweat
Kiero’s reapplication directions call for reapplication based on sun exposure or after perspiring; the page lists SPF 40+/PA++++ without a 40- or 80-minute water-resistance interval.
Kiero’s gel texture may suit an office morning and makeup routine; the SKIN1004 serum and Aqua-Fresh may suit readers who prefer fluid, quick-absorbing layers. For an outdoor shift, a long walk in humid weather or a workout, use a product with a stated water-resistance interval and follow its directions, then treat makeup compatibility as a separate choice.
Apply sunscreen after skin-care products and before makeup, as the American Academy of Dermatology recommends. Plan the midday makeup touch-up after sunscreen reapplication so both steps fit into the workday.
Test the shortlist with your own foundation
A small, repeatable comparison gives a more useful answer than switching products and routines at once. Try each candidate on a different morning while keeping your skin care, foundation, tools and application order the same.
- The AAD recommends at least one teaspoon for the face. Keep the amount consistent across the three tests so the comparison reflects the formula and layering rather than a thinner sunscreen film.
- Keep the rest of the routine steady. Change one candidate at a time so you can tell which combination gives the smoother finish.
- Apply foundation the way you normally do. Note whether you use fingers, a brush or a sponge, and whether you press or sweep. The pilling study found that application methods and skin characteristics can contribute to the result, so consistency makes your personal comparison easier to interpret.
- Check the finished face in the conditions that matter. Look for rolled flakes, uneven foundation or separation after your normal commute and midday touch-up. Record the weather, approximate time and products used; a dry indoor morning and a humid outdoor afternoon are different tests.
- Adjust layering before reducing sunscreen. If a combination pills, simplify one underlying skin-care layer or change how you apply foundation, then retest with the full sunscreen amount. Keep protection and makeup finish as separate goals.
This test identifies the best match for your actual products and routine.
FAQ
Which option is the clearest texture match under foundation?
Kiero Prime Sun Gel is the clearest texture match if you prefer a lightweight, non-sticky gel, and its product page positions it for use under makeup.
Does a serum-like or gel texture mean a sunscreen will not pill?
No. Texture gives a clue about feel and layering, while the 2024 pilling study found different outcomes across people and product combinations. Test the sunscreen with your own foundation at the amount you plan to wear.
Which option should I use if I will sweat outdoors?
Choose a sunscreen with a U.S. label stating 40 or 80 minutes of water resistance. Choose a sunscreen with a U.S. label stating 40 or 80 minutes of water resistance. Follow its reapplication instructions after sweating or swimming and at least every two hours outdoors.
How much sunscreen should I use before makeup?
The American Academy of Dermatology recommends at least one teaspoon for the face. For the face, use at least one teaspoon; most adults need about one ounce, roughly a shot glassful, for all uncovered skin, according to the AAD’s sunscreen application guidance.