Here's a question that more sunscreen brands should take seriously: if your sunscreen is the product that sits on your face for the longest continuous stretch of any day, why shouldn't it also be one of the most active products in your routine? Numbuzin's No. 9 NAD+ BIO Super Defense Glow Sunscreen takes that question and runs with it, packing an ingredient list that looks more like an anti-aging serum than a UV shield.
The sun protection comes from a four-filter chemical system registered with the FDA: avobenzone at 3% for UVA, homosalate at 7%, octisalate at 5%, and octocrylene at 5% for UVB and — crucially — for photostabilizing the avobenzone. That last detail is the one most people miss. Avobenzone degrades under the very sunlight it exists to block, losing a substantial fraction of its protection within an hour unless something props it up. Octocrylene is that something. A sunscreen with avobenzone and no stabilizer is a sunscreen that quietly stops working while you are still wearing it, and the fact that this formula gets the pairing right is more important than anything else on the label.
What happens beyond the filters is where things get interesting. Numbuzin loaded the inactive portion with the No. 9 line's anti-aging technology, starting with NAD+. The theoretical appeal in a sunscreen is genuinely compelling: UV exposure depletes NAD+ in skin cells, compromising the DNA repair machinery that prevents photoaging. Supplying it topically during UV exposure could, in principle, support those repair pathways in real time. Whether topical NAD+ actually penetrates and achieves that at the concentration present here is entirely unproven, and honesty requires saying so — but the logic is scientifically coherent rather than invented, which is more than most trend ingredients can claim.
Nine peptides follow, including acetyl hexapeptide-8, copper tripeptide-1 and palmitoyl pentapeptide-4, alongside ATP, proline, acetyl tyrosine and hydrolyzed collagen. In a product that sits on your face for eight to twelve hours, these have far more contact time than they would in a serum you layer over and forget. Whether extended surface contact translates into better peptide performance is uncertain. The opportunity, at least, is real.
The hydration system is the part that is unambiguously excellent. Seven forms of hyaluronic acid — from crosspolymer down to hydrolyzed fragments, plus a cationically modified version that clings to the skin surface more stubbornly than standard HA — create multi-depth moisture that prevents the tight, papery feeling chemical sunscreens so often leave. Polyglutamic acid adds another humectant layer and, cleverly, inhibits the enzyme that breaks hyaluronic acid down, protecting the complex it sits beside. Glycerin underpins the whole thing. This sunscreen actively hydrates rather than merely failing to dehydrate, and that distinction is worth more than any peptide on the deck.
Niacinamide, sitting early in the inactive list, is the quiet star. Beyond barrier support and brightening, topical niacinamide has been shown to reduce UV-induced immunosuppression — meaning it helps the skin keep its immune defenses intact under UV stress. That makes it a genuinely functional sunscreen ingredient rather than a marketing garnish, and it is the one addition here whose photoprotective value is beyond argument. Centella, licorice root, houttuynia, allantoin, panthenol and resveratrol round out the soothing and antioxidant bench, and antioxidants matter in a sunscreen for the same reason they matter anywhere: no filter stops every photon, and the free radicals generated by what slips through do real cumulative damage.
The texture is what sells the product in daily use. It applies as a lightweight cream with a faint luminosity, spreads without white cast, and sets to a dewy finish — not matte, not shiny, but glowy in a way that reads as healthy skin rather than oily skin. Under makeup it works as a luminous primer. Without makeup it gives a polished, bare-faced glow.
That dewiness is also the caveat. If you already produce excess sebum and live somewhere humid, the added luminosity can tip into genuine shine by mid-afternoon. Matte-finish seekers should look elsewhere; the finish is a feature, not a compromise, and it will not suit everyone.
The other honest caveats: this is a chemical filter system, and avobenzone in particular is notorious for stinging around the eyes. The soothing ingredients buffer that admirably for most people, but sensitive and rosacea-prone skin should patch test rather than assume. It is not fungal-acne-safe. And the product launched in 2025 with barely a hundred reviews on record, which means its real-world wear — how it behaves at hour eight, in heat, under makeup — is not yet independently validated. Treat the enthusiasm as promising rather than proven.
One thing no formula can fix: the dose. Two finger-lengths for the face, roughly a quarter teaspoon, is what the SPF 50 rating assumes, and almost nobody applies that much. A 50ml tube used correctly runs six to eight weeks. If yours lasts six months, the number on the front of the box is aspirational.
At $18 for 50ml, this is aggressive pricing for a sunscreen with this much going on. The HA complex alone would justify more; add NAD+, nine peptides, resveratrol, centella and licorice, and the formulation cost has to be meaningful. It undercuts most Western chemical sunscreens carrying far simpler formulas, and it comfortably outperforms them on the skincare dimension.
This is the direction the category should be heading: UV protection as the baseline rather than the ceiling. When the product you wear for twelve hours a day also hydrates, soothes and signals, the line between protection and treatment stops meaning much. Your sunscreen becomes the hardest-working thing in your morning — which, given how long it stays on your face, is exactly what it always should have been.
