KlaroNail's 13 Botanicals: Every Ingredient Examined and Explained

Most nail health products list ingredients without explaining why those ingredients are present or what role each one plays in the overall formula. This article does the opposite — working through each of KlaroNail's 13 ingredients and establishing what the research says, what function it serves, and why its inclusion in a nail spray formula makes sense.

1. Tea Tree Oil (Melaleuca alternifolia)

Tea Tree Oil has one of the strongest bodies of research for topical nail health among any botanical. Its antimicrobial activity derives primarily from terpinen-4-ol, a monoterpene alcohol that disrupts microbial cell membranes. Multiple studies have evaluated Tea Tree Oil specifically against nail-relevant organisms, with results supporting its use as a primary active in topical formulas. When used consistently over weeks, it has demonstrated visible improvement in nail appearance in controlled studies.

2. Undecylenic Acid

Undecylenic Acid is a fatty acid derived from castor oil that has been used in pharmaceutical-grade nail treatments since the mid-20th century. It inhibits the growth of fungi by interfering with cell membrane synthesis. Its antifungal activity is well-documented in peer-reviewed literature, and it remains one of the few botanical nail health actives with a track record in clinical settings. Combined with Tea Tree Oil, it provides complementary antimicrobial coverage that single-active formulas cannot match.

3. Clove Bud Oil

Clove Bud Oil's primary active, eugenol, is among the most studied phenolic compounds in botanical medicine. It exhibits broad-spectrum antimicrobial activity and has been evaluated specifically for its efficacy against nail-affecting fungi in multiple laboratory studies. At the concentrations typical of topical formulas, it provides meaningful additional antimicrobial support alongside the two primary actives.

4. Lavender Oil

Lavender Oil contributes both antimicrobial and anti-inflammatory properties. The linalool and linalyl acetate in lavender have demonstrated activity against several fungal strains in research settings. Simultaneously, its anti-inflammatory effect on the skin surrounding the nail addresses a frequently overlooked dimension of nail health — the periungual skin often becomes inflamed and sensitised during nail conditions, and calming it supports overall recovery.

5. Manuka Honey

Manuka Honey is produced by bees that forage on Leptospermum scoparium (New Zealand tea tree). It contains methylglyoxal at significantly higher concentrations than conventional honey, along with hydrogen peroxide-generating enzymes. These compounds create an osmotic and chemical environment that inhibits microbial growth while supporting wound-healing processes in damaged skin. Its inclusion in a nail spray is particularly well-reasoned: it addresses both the microbial aspect of nail conditions and the skin recovery aspect simultaneously.

6. Flaxseed Oil

Flaxseed Oil is one of the richest plant sources of alpha-linolenic acid (ALA), an omega-3 fatty acid. In the context of nail health, omega-3 fatty acids support nail plate lipid structure and help address the brittleness and thinning that commonly accompany nail conditions. Flaxseed Oil also serves a secondary function as a carrier, improving the spreadability and skin contact of the active botanical ingredients.

7. Sweet Almond Oil

Sweet Almond Oil is high in oleic acid and linoleic acid, two fatty acids with well-established emollient and skin-conditioning properties. It softens the cuticle and surrounding skin, making the nail environment more receptive to treatment. As a carrier oil, it also supports the even distribution of active ingredients across the nail surface.

8. Camphor Oil

Camphor Oil has a long history of topical use for its analgesic, antifungal, and anti-inflammatory properties. In nail formulas, it contributes to the formula's antimicrobial activity while also providing a soothing cooling sensation that reduces the discomfort many people experience with nail conditions. Camphor also acts as a mild penetration enhancer, supporting other ingredients' absorption into nail tissue.

9. Aloe Vera

Aloe Vera's skin-soothing properties are among the most extensively researched of any botanical. The glycoproteins in Aloe have anti-inflammatory activity, and its polysaccharides support wound healing and reduce redness. In a nail spray, it provides immediate relief to irritated periungual skin while supporting the repair of tissue damaged by chronic nail conditions.

10. Menthol

Menthol activates TRPM8 cold receptors in the skin, producing a cooling sensation that temporarily reduces the perception of pain and irritation. Beyond comfort, menthol functions as a recognised penetration enhancer for topical formulas — it alters the organisation of lipid bilayers in the stratum corneum, increasing the permeability of the skin and nail surface to co-applied active ingredients. This makes it a strategically valuable component in a multi-active formula like KlaroNail.

11. Walnut Oil

Walnut Oil contains juglone, a natural naphthoquinone with documented antifungal properties, alongside significant concentrations of omega-3 and omega-6 fatty acids. This means Walnut Oil serves both as an active contributor to the formula's antimicrobial activity and as a nutritive support for nail health — a combination that justifies its inclusion beyond what a generic carrier oil would provide.

12. Chia Seed Oil

Chia Seed Oil is one of the highest plant sources of omega-3 ALA by proportion. In nail health, it supports the structural integrity of thin or damaged nail plates by addressing lipid deficiencies in the nail matrix. Consistent use over weeks helps restore nail density and resilience over time.

13. Vitamin E (Tocopherol)

Vitamin E is a fat-soluble antioxidant that protects nail and skin tissue from oxidative damage. During nail infections, local inflammation generates reactive oxygen species that damage healthy tissue adjacent to the affected area. Vitamin E quenches these free radicals, reducing secondary damage and creating a more favourable environment for recovery. Its inclusion as the final ingredient in KlaroNail's formula reflects an understanding that antioxidant protection is often missing from botanical nail products despite being important to long-term outcomes.