What are the benefits of coconut oil for the nails?

Derived from the pulp of the coconut (Cocos nucifera), coconut oil is rich in medium-chain triglycerides, particularly lauric, caprylic and capric acids. These lipids have emollient and protective properties that may help to maintain the hydration of the skin tissues surrounding the nails and preserve the suppleness of the nail plate. Although research specifically focused on the nails remains limited, the moisturising, antioxidant and antimicrobial properties attributed to coconut oil suggest that it may help to improve the appearance and strength of the nails when used regularly.

Coconut oil hydrates and nourishes the nails.

The nail plate is composed of dense layers of keratin that require a balanced lipid environment to maintain their flexibility. When nails are repeatedly exposed to water, solvents or household products, they can lose some of their natural lipids and become more fragile. Owing to its high content of fatty acids, coconut oil acts as an emollient capable of forming a protective film on the surface of the nail and cuticles. This action limits water evaporation and helps to maintain local hydration. By also nourishing the skin around the nail, it helps to soften the cuticles and can improve the overall appearance of the nails.

Coconut oil helps protect nails from oxidative stress.

Like the skin and hair, nails can be exposed to oxidative stress, particularly as a result of the sun’s UV rays, pollution and smoking. To recap, oxidative stress corresponds to an imbalance between the quantity of free radicals and endogenous antioxidant defences. If they are not neutralised, these free radicals can damage cellular structures and proteins, including keratin. Coconut oil contains various antioxidants, notably vitamin E and polyphenols, which may neutralise some of the free radicals and thus help in the preservation of the integrity of the nail plate and the surrounding skin.

Coconut oil has antimicrobial activity.

Nails and their surrounding tissues are regularly exposed to micro-organisms present in the environment. Certain bacteria or yeasts can proliferate there, particularly when the skin around the nail is weakened, and may cause fungal infections. Coconut oil is known to contain lauric acid, a fatty acid that can be converted into monolaurin, a compound with antimicrobial properties. Several studies have shown that these molecules can disrupt the membrane of certain bacteria and fungi. Although these observations come mainly from experimental research, they suggest that coconut oil could help to maintain a healthier skin environment around the nails and cuticles.

Even though these benefits of coconut oil remain hypothetical to date in the absence of clinical studies, the historical use of this vegetable oil suggests that it can effectively complement a nail care routine without undesirable effects.

When used regularly, coconut oil may help to improve the appearance of the nails and to maintain the suppleness of the cuticles.

• Daily hydration of the nails : After washing your hands, apply a small amount of coconut oil to each nail and gently massage the nail plate as well as the cuticles. This simple action creates a protective lipid film that helps prevent the nails from drying out.

• Nourishing overnight treatment : For a more intensive treatment, a more generous layer of coconut oil can be applied to the nails and cuticles before going to bed. Wearing cotton gloves, or aluminium wraps, can promote the penetration of the oil and prevent staining of the bed sheets.

• Preparing the cuticles before a manicure : Before pushing back or cutting the cuticles, applying a small amount of coconut oil can help to soften them. This may help to reduce the risk of irritation or minor injuries around the nail.

• Restorative care after a manicure : Acetone-based nail polish removers, gels or artificial nails can dry out the nail plate and irritate the surrounding skin. After removing the polish or extensions, massaging the nails with coconut oil can help restore hydration and soothe the skin around the nail.

• SHARMA L. & al. Natural therapy of fungal nail disease. The Pharma Innovation (2012).

• EVANGELISTA M. T. P. & al. The effect of topical virgin coconut oil on SCORAD index, transepidermal water loss, and skin capacitance in mild to moderate pediatric atopic dermatitis: A randomized, double-blind, clinical trial. International Journal of Dermatology (2014).

• KATHURIA D. & al. Cosmeceutical applications of natural oils and fats. Plant Metabolites as Cosmeceuticals (2024).

• GEW L. T. & al. A comprehensive review of plant-based cosmetic oils (virgin coconut oil, olive oil, argan oil, and jojoba oil): Chemical and biological properties and their cosmeceutical applications. ACS Omega (2024).