Contents
A moisturiser built for plantar skin, which is unlike skin anywhere else on the body and needs a different formula rather than a thicker one. Foot cream is the one place in this catalogue where a keratolytic — a substance that breaks down thickened keratin — is the point rather than an add-on.
What plantar skin is
The sole has the thickest stratum corneum on the body, no sebaceous glands at all, and the highest density of eccrine sweat glands. It responds to pressure by thickening further — that is what a callus is, and it is a correct adaptive response rather than a fault.
The consequences: no natural oil to hold water, thickened keratin that traps and then loses water unevenly, and heel fissures that open along lines of stress when that dry thickened plate splits under load.
The ingredient that works
| Ingredient | Concentration | Effect |
|---|---|---|
| Urea | 10% | Humectant and mildly keratolytic |
| Urea | 20–40% | Strongly keratolytic; softens and thins callus |
| Salicylic acid | 2–6% | Keratolytic; also an OTC drug active at monograph level |
| Lactic acid / ammonium lactate | 5–12% | Humectant and exfoliating |
| Petrolatum, dimethicone | — | Occlusion; seals the whole thing in |
| Allantoin, panthenol | — | Soothing, mildly keratolytic |
Urea at 20–40% is what actually works on heels, and it is widely available in pharmacy foot creams. Ordinary body lotion on a fissured heel is close to useless: the problem is a thick keratin plate, not a lack of lotion.
The routine that fixes heels
- Soak briefly to soften.
- Reduce the callus mechanically — a foot file on dry skin, gently, over several sessions. Not a blade, and not to smoothness in one go.
- High-urea cream nightly, under cotton socks.
- Address the cause — footwear with an open back is the usual culprit, because the unrestrained heel fat pad spreads under load and splits the skin at the rim.
Fissures deep enough to bleed can become infected, and this matters far more in diabetes and peripheral neuropathy, where reduced sensation means an injury goes unnoticed. Anyone in that group should not use blades, strong keratolytics or aggressive filing without a clinician's direction, and should treat any foot wound as urgent rather than cosmetic.
What is not a foot cream problem
Itching, scaling between the toes, a rash on the sole, or thickened yellow nails suggests tinea pedis or onychomycosis — fungal infections requiring antifungal treatment, which is an OTC or prescription drug, not a moisturiser. Moisturising a fungal infection does not help and moisture between the toes makes it worse.
Where it sits in the rules
Cosmetic in the US — FDA primary category (14) — for a urea or lactic acid foot cream making moisturising and softening claims. It is an OTC drug when it contains a monograph active with a matching claim: salicylic acid for corns and calluses, or a skin protectant such as petrolatum or dimethicone. Antifungal foot products are drugs under the topical antifungal monograph — tolnaftate, clotrimazole, miconazole, terbinafine — with Drug Facts panels and expiration dates.
Shelf life
Twelve months after opening. High-urea creams can develop an ammonia note as urea slowly hydrolyses, particularly if stored warm; that is degradation and the product is losing strength. Tubes beat tubs, and a tub kept in a bathroom and used with feet already washed is the usual contamination route.
Related
- Skincare — the shelf this sits on, and the rest of it.
- Cosmetics — what the label is legally allowed to say, and the full catalogue.
- The rest of Body, hand and foot — Body Lotion · Body Butter · Body Oil · Body Scrub · Hand Cream · Foot Powder and Spray · Stretch Mark Cream · Cellulite Cream.
- Foot Powder and Spray — the other half of foot care, aimed at moisture rather than dryness.
- Regulatory statements here follow the FDA and EU sources listed on Cosmetics, read 16 August 2026.