butter LONDON Horse Power Strengthening Base Coat Nail Polish - Repairing, Horsetail & Biotin

Horse Power Basecoat by butter LONDON is a strengthening nail primer formulated with horsetail extract, biotin, vitamin B and calcium to fortify and help restore fragile, damaged nails.

Bring resilience back to weak or peeling nails with a treatment designed to work beneath polish. This lightweight basecoat creates a protective layer that helps reduce visible damage, smooths nail surface for more even color laydown, and supports healthier-looking nails with repeat use. The formula is cruelty-free, gluten-free and crafted to slot easily into your manicure routine.

How does Horse Power help repair damaged nails?

The basecoat combines plant-derived horsetail extract with biotin, vitamin B and calcium to support nail surface integrity and resilience. While it doesn’t cure underlying conditions, regular application can visibly improve strength and reduce breakage over time.

• Horsetail extract: helps condition and smooth nail plate.
• Biotin and vitamin B: support natural nail structure appearance.
• Calcium: helps reinforce nails against splitting and chipping.
• Lightweight primer: prevents polish from adhering to flaking or uneven nails.

When and how should I use this basecoat for best results?

Apply one thin coat to clean, dry nails before any colored polish or treatment. Allow it to dry fully, then follow with your chosen butter LONDON color or topcoat; use regularly as part of your manicure routine for cumulative benefits.

• Prep: remove old polish and push back cuticles for even coverage.
• Application: one thin, full-coverage coat per nail; avoid flooding the cuticle.
• Routine: use before each manicure or as a standalone strengthening treatment.
• Pairing: follows with polish or topcoat to lock in protection.

Will this prevent my polish from staining my nails?

Yes — acting as a protective primer, Horse Power forms a barrier between pigment and nail plate to reduce staining risk. For deeply pigmented shades, a second base layer can offer extra protection during longer wear.

• Barrier effect: reduces direct contact between polish pigments and nail.
• Suitable under bold shades: recommended when using dark or red lacquers.
• Easy removal: polish lifts cleanly without pulling at the nail surface.

Is the formula safe for everyday use and my lifestyle?

The formula is cruelty-free and gluten-free, formulated with a focus on safer, feel-good ingredients. It’s free of known harsh toxins commonly avoided in modern nail care and designed for regular use as part of a conscientious beauty routine.

• Cruelty-free: not tested on animals.
• Gluten-free: suitable for those avoiding gluten in topical nail products.
• Good-for-you focus: crafted to balance performance with cleaner ingredients.

Who is this for: butter LONDON Horse Power Basecoat is aimed at anyone with brittle, peeling or frequently breaking nails who wants a protective primer that supports stronger-looking nails and neater manicures. It’s suited to polish lovers seeking a restorative base layer, people who wear bold colors and need stain protection, and anyone who prefers cruelty-free, thoughtfully formulated nail care.

Ingredients

Ethyl Acetate, Butyl Acetate, Alcohol Denat., Nitrocellulose, Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer, Isopropyl Alcohol, Trimethylpentanediyl Dibenzoate, Acetyl Tributyl Citrate, Sucrose Acetate Isobutyrate, Etocrylene, Retinyl Palmitate, Tocopheryl Acetate, Dimethicone, Biotin, Calcium Pantothenate, Glycerin, Equisetum Hiemale Extract, Glycidoxypropyl Trimethoxysilane, Methacryloyl Propyltrimethoxysilane, Methyltriethoxysilane, Mercaptopropyltrimethoxysilane, Ascorbic Acid, CI 60725 (Violet 2).