No. 9 NAD+ Retinol Volumetox Eye Cream

The longevity community knows NAD+ well. Nicotinamide adenine dinucleotide—a coenzyme that powers cellular energy production and DNA repair—has led the supplement market for years, backed by researchers studying molecular aging. As we age, NAD+ levels drop; the theory suggests replenishing them could slow or reverse cellular aging. Oral supplements, IV infusions, and NAD+ precursors like NMN drive a billion-dollar industry. Numbuzin now asks: what if you apply NAD+ directly to the skin?

This is a bold claim, and the evidence for topical NAD+ delivery is still emerging. The molecule is large and does not penetrate the skin easily. Most studies supporting NAD+ as an anti-aging intervention focus on oral or intravenous use, not topical application. Numbuzin does not disclose the NAD+ concentration, and independent studies on topical NAD+ in skincare are sparse. If NAD+ were the only active in this formula, skepticism is warranted.

But NAD+ does not work alone—it is part of an ensemble that would be impressive at three times the price. Niacinamide is high in the ingredient list, and the science is clear: niacinamide is a direct precursor to NAD+ within the skin. The body converts niacinamide to NAD+ through the salvage pathway, a well-documented process. By including both the end product (NAD+) and its most efficient precursor (niacinamide), Numbuzin uses a dual-pathway approach—supplying NAD+ directly while boosting the skin’s own production. Whether topical NAD+ penetrates meaningfully or not, the niacinamide pathway is well-established.

Then there is the retinol. Positioned lower in the ingredient list, the concentration is likely gentle—suitable for the periorbital area where skin is up to ten times thinner than the rest of the face. Retinol’s ability to stimulate collagen production and accelerate cell turnover is one of the most validated claims in dermatology. Even at low concentrations, consistent nightly application improves fine lines around the eyes over 8-12 weeks.

The peptide complex makes the formula feel ambitious for its price. Over thirty peptides are included, such as Acetyl Tetrapeptide-5—marketed as EYESERYL, researched for under-eye puffiness via reduced fluid accumulation—and Copper Tripeptide-1, which has evidence for stimulating collagen, elastin, and glycosaminoglycan production. Multiple palmitoyl peptides target wrinkle depth and skin firmness through signal peptide mechanisms. Are all thirty peptides at an efficacious concentration? Almost certainly not. But even a few working at mild levels, alongside the retinol and niacinamide, creates a multi-pronged approach most eye creams in this price range do not attempt.

The vehicle is smart. Ceramide NP with cholesterol supports the fragile eye area barrier. Three forms of hyaluronic acid—regular, hydrolyzed, and sodium hyaluronate—provide multi-depth hydration. Macadamia and olive oils provide emolliency, and shea butter adds occlusive weight without heaviness. The texture is substantial enough to feel like a treatment, but not so heavy that it migrates into the eyes during sleep.

Users respond well. Over 840 reviews on Numbuzin’s own site show consistent praise for the gentle retinol that does not sting, the immediate brightening effect under the eyes, and the thick-but-not-greasy texture. The complaint about the 10 mL size is universal and valid—this is a very small tube, and even with tiny amounts for the eye area, it lasts about six to eight weeks. At $21, the monthly cost is reasonable, but the small tube is noticeable.

Numbuzin deserves credit for ambition, even if the NAD+ claim outpaces the evidence. The Numbuzin founders trained at Amorepacific—Korea’s largest beauty company—and their formulation reflects that: they layer multiple mechanisms at gentle concentrations instead of betting on one hero ingredient at a high dose. This philosophy reduces irritation risk while increasing the chance that several actives do meaningful work.

For the price, this eye cream offers more ingredient complexity than products costing three to five times as much. The retinol, niacinamide, ceramide, and peptide layers are all well-validated. The NAD+ is the speculative addition—potentially meaningful, but not yet proven for topical use. If you treat this as an excellent retinol-niacinamide-peptide eye cream with an intriguing NAD+ addition, rather than a NAD+ eye cream with supporting ingredients, you will set accurate expectations and likely see satisfying results.