There isn't a one-and-done cure for brittle nails—growing long and strong nails means sticking to a consistent routine full of nail hardeners, shaping, and oils. Many nail oils promise to take your nails to lengths they've never been before, but one in particular is taking TikTok by storm: Radiant Cosmetics' Nail Growth Oil. To assess whether or not this miracle oil is all its cracked up to be, we consulted with LeChat Nails educator, Anastasia Totty; and double board-certified facial plastic surgeon and founder of DeRosa Center Plastic Surgery & Med Spa, Dr. Jaimie Derosa.
The Hype
Transformation videos are always exciting, but those associated with Radiant Cosmetics' Nail Growth Oil ($15) seem almost too goo to be true. People all over BeautyTok are posting their nail and cuticle journeys, cutting from photos of brittle nail beds and frayed cuticles to pristine nails that make you question if you're even looking at the same person's hand. To add to the magic-like effects, users are reporting longer and stronger nails in just two weeks of nightly application.
The Formula
The results seem almost too good to be true, but according to Dr. Derosa, the formula seems to be legit. "The Radiant cosmetics Nail Growth Oil contains some essential ingredients for promoting nail health and growth, as well as keeping nails looking radiant." Dr. Derosa points to this formula's key vitamins, like vitamin E, which moisturizes the nails and cuticles while providing antioxidant protection; vitamin B7 (AKA biotin), which has been shown to minimize breakage; and vitamin C, which she explains can give strength and structure to the nails since it boosts collagen production.
Dr. Derosa also mentions that the Radiant Cosmetics Nail Growth Oil's AHA content is beneficial, explaining that "exfoliation removes dry skin and hangnails from the nail plate, rejuvenates living skin, and conditions and moisturizes the skin in the nail area. Clinical data supports glycolic acid's effectiveness in nail care applications such as cuticle oils, creams, lotions, exfoliators, and peels for nail rejuvenation. The AHAs also help to brighten the nails."
In short, this oil can in fact help improve your nails—but it turns out that there's nothing particularly special about the Radiant Cosmetics Nail Growth Oil compared to similar products. Totty explains, "As long as you use it systematically, the results will definitely be visible. Yet, just by looking at the list of ingredients, I cannot see anything in it that is different from professional cuticle oils available on retail shelves or online." Totty also mentions that although biotin does work to promote nail health, the vitamin is far more effective when ingested as a supplement than applied topically.
Regarding packaging, Totty appreciates this pen applicator's ease of use: "I do like the pen dispenser it is sold in because it's extremely convenient to carry in your purse and reapply as needed."
