YSE Beauty Review: An SPF 30 Primer Is the Weakest Sunscreen in the Range - Buy the Minis First

This is the most useful thing in this review, and it applies to every SPF-containing makeup product ever sold. Sunscreen SPF ratings are measured at an application density of 2 milligrams per square centimetre of skin. In practice that is far more product than anyone applies — most people apply between a quarter and a half of that, which means the protection you actually get is a fraction of the number on the bottle. A useful benchmark: about a quarter to a half teaspoon for the face and neck, or the "two finger rule" — a strip of sunscreen along the length of your index and middle fingers. Nobody applies a primer at that density. A primer is applied thinly, as a base for makeup, and then partially removed by the foundation applied over it. So an SPF 30 primer applied normally delivers meaningfully less than SPF 30. What dermatology bodies actually recommend: Broad-spectrum sunscreen of SPF 30 or higher, applied generously to all exposed skin. Reapplication every two hours, and after swimming, sweating or towelling. "Broad spectrum" matters as much as the number — it means protection against UVA as well as UVB. UVB causes burning, UVA drives photoageing and also contributes to skin cancer. An SPF number alone tells you nothing about UVA. Shade and clothing. A hat and sleeves outperform any product. So how should you use an SPF primer? As an additional layer over a proper sunscreen, and as a top-up option during the day. It is genuinely good for that. It is not a substitute for the sunscreen step, and using it as one is the most common sun-protection mistake in the makeup category. On reapplication over makeup, which is the practical problem everyone has: powder or spray SPF products are the usual answer, and they suffer the same density problem. The honest advice is that if you will be outdoors for an extended period, plan to reapply properly or rely on shade, a hat and clothing rather than on cosmetics. Two more things worth knowing: Sunscreen has an expiry date and should be replaced. If you are getting through less than a bottle a year for daily facial use, you are probably not applying enough. Sun protection is the single highest-value step in any skincare routine. The majority of visible facial ageing — lines, pigmentation, loss of elasticity, texture — is attributed to cumulative UV exposure rather than chronological ageing. A $159 serum on unprotected skin is money spent against a bigger force.

The range centres on three ingredient classes with genuinely different evidence bases and different irritation profiles. Retinol. The best-evidenced topical anti-ageing ingredient available without a prescription. Retinoids increase cell turnover and stimulate collagen; the effects on fine lines, texture and pigmentation are real and well documented — and they take months, not weeks. How to start, because this is where people fail: Twice a week at night, then build up. Not daily from day one. Apply to dry skin, since damp skin increases penetration and irritation. The "sandwich" method helps sensitive skin — moisturiser, then retinol, then moisturiser. Expect a purge and some peeling in the first weeks. Mild dryness and flaking are normal; burning, persistent redness and stinging are not, and mean you are using too much or too often. Retinol makes skin more sun sensitive. Daily sunscreen is not optional alongside it. Do not layer retinol with strong acids or benzoyl peroxide in the same routine unless you know your skin tolerates it. Alternate nights. Stop before waxing, laser treatment or a chemical peel — usually a week, but follow your practitioner's advice. Who should not use retinol: anyone pregnant or trying to conceive, or breastfeeding. Oral retinoids are established teratogens, and while topical retinol absorption is low, dermatology guidance is consistently to avoid retinoids in pregnancy. Ask your obstetrician; the usual alternatives suggested are azelaic acid, niacinamide and vitamin C. Vitamin C. Good evidence as an antioxidant, for brightening and for supporting collagen, and it complements sunscreen well. Practical points: It is unstable. L-ascorbic acid oxidises in light and air. If your serum has turned dark orange or brown, it has oxidised and is past its useful life. Opaque, air-restrictive packaging matters more here than in any other category. It can sting on sensitive or compromised skin. Use it in the morning under sunscreen, where the antioxidant effect is most useful. Buy small. A large bottle of vitamin C is often false economy because it degrades before you finish it — another argument for the mini. Peptides. Popular, well tolerated, and the evidence is the weakest of the three. Some peptides have supportive studies; the category as a whole is less well substantiated than retinoids or vitamin C, and results are subtle. They are a reasonable, low-irritation addition rather than the thing doing the heavy lifting. Niacinamide, if present in the range, is a genuinely good all-rounder — well tolerated, supports the barrier, helps with redness and pigmentation, and plays nicely with almost everything. The general rule that saves the most money and skin: introduce one new active at a time, and give it at least four to six weeks. Starting three products at once means that when your skin reacts, you have no idea which one did it — and reacting is common. Patch test on the inner forearm or behind the ear for a few days before applying anything new to your whole face.

On the money. Prices seen ran to around $109, $125, $138 and $159, with minis from around $25, and free ground shipping over $65. This is premium positioning — comparable with department store skincare rather than pharmacy brands. What you are paying for at this tier, honestly: formulation, texture, packaging, brand and the curation of a small range where you do not have to choose between forty serums. What you are generally not paying for is a unique active ingredient — retinol, vitamin C, niacinamide and peptides are all available in effective formulations at a fraction of the price. That is not an argument against buying it. Texture and experience genuinely determine whether you use a product daily, and a product you enjoy using and therefore apply consistently beats a cheaper one that sits in a drawer. Consistency is most of the result in skincare. Just buy it knowing that is the trade. How to buy sensibly here: Start with minis. The SPF primer, vitamin C serum and retinol serum all have mini versions. At these prices, spending around $25 to find out whether a retinol irritates you is obviously better than spending $125. Buy one thing at a time. A two-step set is convenient and it also means two new actives at once, which makes any reaction untraceable. Treat the skin quiz as a starting point, not a diagnosis. Online quizzes are a merchandising tool. They are useful for narrowing options and they are not a substitute for a dermatologist if you have a real skin condition. Weigh the awards appropriately. A beauty magazine award reflects editorial testing, not a clinical trial. Retail expansion tells you about commercial traction, not efficacy. Check the Subscribe & Save terms before enrolling — the recurring price, the frequency, whether you can skip or pause, and the cancellation route. Serums last longer than most people expect, and skincare subscriptions are a classic source of accumulating stock. Confirm the returns policy on opened products. Some brands accept returns of used skincare; many do not. This determines how risky a full-size purchase is. When to see a dermatologist instead of shopping: Persistent acne, particularly if it is scarring — prescription treatments are far more effective than anything over the counter, and scarring is permanent. Rosacea, which needs a specific approach and can be worsened by the wrong products. Melasma or stubborn pigmentation, which is difficult to treat and needs strict sun protection plus a proper plan. Any new, changing or non-healing mole, sore or spot — this warrants prompt assessment. Sudden severe reaction to a product, particularly with swelling or blistering. Skincare cannot address photoageing already present in the way a procedure can. If that is your goal, a consultation is a better use of $159 than another serum.

What does YSE Beauty cost? Prices seen on August 12, 2026 included items around $109, $125, $138 and $159, with minis from around $25, and free ground shipping on orders over $65. Is the SPF 30 primer enough sun protection? No. SPF is measured at an application density far higher than anyone applies a primer, and foundation over it removes some. Use a separate broad-spectrum SPF 30 or higher sunscreen and treat the primer as a bonus layer. How much sunscreen should I actually apply? About a quarter to a half teaspoon for face and neck, or a strip along your index and middle fingers. Reapply every two hours outdoors. Does "SPF 30" tell me about UVA protection? No. Only the words "broad spectrum" do. UVB causes burning; UVA drives photoageing and also contributes to skin cancer. How do I start retinol without wrecking my skin? Twice a week at night on dry skin, building up gradually. Buffer with moisturiser if sensitive. Mild flaking is normal; burning and persistent redness mean too much, too often. Can I use retinol while pregnant? No. Dermatology guidance is consistently to avoid topical retinoids in pregnancy and while breastfeeding. Ask your obstetrician about alternatives such as azelaic acid, niacinamide or vitamin C. Why has my vitamin C serum turned brown? It has oxidised. L-ascorbic acid is unstable in light and air, and a darkened serum is past its useful life. Buy small sizes for this reason. Do peptides work? Some have supportive studies, but the evidence is weaker than for retinoids or vitamin C, and results are subtle. They are a low-irritation addition rather than the main event. Should I buy a two-step set? Convenient, but it means introducing two actives at once. If your skin reacts you will not know which caused it. One product at a time, four to six weeks each. Is the skin quiz reliable? It is a merchandising tool that is useful for narrowing options. It is not a diagnosis, and it does not replace a dermatologist for a real skin condition. Can I return opened skincare? Check the policy before buying — some brands accept it and many do not, and that determines how risky a full-size purchase is. When should I see a dermatologist? Persistent or scarring acne, rosacea, melasma, a sudden severe reaction, or any new, changing or non-healing mole, sore or spot.