The Truth About Natural Nails: Why Products Can’t Penetrate the Nail Plate

There’s a lot of misinformation out there about natural nails, especially when it comes to how products interact with them. One of the biggest myths? That oils, vitamins, or treatments can penetrate the nail plate and “nourish” your nails from the outside. The truth is, the only thing that can pass through your nail plate is water—everything else stays on the surface.

Your nails are made of keratin, a tough, protective protein that forms layers stacked tightly together. These layers create a barrier that blocks most substances from soaking through. While water can make its way in and out, causing temporary softness or brittleness depending on exposure, other ingredients—like oils or nail strengtheners—only sit on top of the nail, helping to improve flexibility or prevent moisture loss rather than sinking in.

So what does this mean for nail care? It means the best way to keep natural nails healthy is to focus on protecting and maintaining them rather than relying on products to “repair” or “feed” them. Hydrating cuticles with oils and lotions helps keep the surrounding skin soft and prevents hangnails. Using a quality base coat can shield nails from staining and damage. And of course, avoiding excessive exposure to water and harsh chemicals will go a long way in keeping nails strong and resilient.

Next time you hear someone say that a product is “absorbed” into the nail to provide nutrients, you’ll know better! Taking care of natural nails is all about external protection, not internal absorption. Focus on good habits and the right products to keep your nails looking their best—without falling for the myths!