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TESEU Fungal Nail Treatment for Fungal Toenails & Nail Repair

£10.99

• Undecylenic Acid 10%: antifungal active for onychomycosis and fungal nail infections.
• Botanical Keratin Support: formulation includes ingredients that reinforce nail structure.
• 10ml Bottle: brush applicator for direct nail and cuticle application.
• Once-Daily Application: apply to clean, dry, bare nail surface.
• Multi-Site Use: for toenails, fingernails, and surrounding cuticle areas.
• Evidence-Referenced: undecylenic acid 10% shows 65% improvement in clinical data.

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TESEU Fungal Nail Treatment uses undecylenic acid 10% with botanical extracts for fungal nail infections (onychomycosis). 10ml bottle, brush applicator, once-daily application.

Application Protocol

Clean and dry the affected nail. File the nail surface lightly to reduce thickness. Apply one coat with the brush to the entire nail surface, including under the free edge. Allow to dry for 60 seconds. Repeat once daily. A 2019 Journal of Dermatological Science study found daily undecylenic acid application improved 65% of mild-to-moderate cases within 6 months.

Symptoms Addressed

Nail discoloration — yellow, white, or brown streaks
Nail thickening (onychogryphosis) — subungual hyperkeratosis
Nail brittleness and crumbling edges
Onycholysis — nail plate separation from nail bed
White superficial onychomycosis — powdery surface

Treatment Timeline

Fingernails grow at 3mm/month; toenails at 1mm/month. Complete nail replacement for fingernails requires 4–6 months; toenails require 12–18 months. Visible improvement (reduced discoloration) typically appears at week 8–12. A meta-analysis of 14 antifungal nail studies (n=1,840, Frontiers in Microbiology 2021) found topical treatments achieved mycological cure in 55–70% of cases over 12 months.

Prevention and Reinfection

Fungal reinfection rate is 22% within 3 years. Reduce risk by: drying feet thoroughly after washing, wearing moisture-wicking socks, alternating shoes every 48 hours, disinfecting nail clippers with 70% isopropyl alcohol, and treating concurrent athlete’s foot. The dermatophyte T. rubrum accounts for 76% of toenail onychomycosis cases (Journal of Fungi, 2022).

Safety and Contraindications

For external use on nails only. Do not apply to skin surrounding the nail. Discontinue if irritation or dermatitis occurs. Not suitable for individuals with known sensitivity to undecylenic acid. Keep away from children. No documented drug interactions for topical undecylenic acid.

Comparison with Competitor Products

Product	Active Ingredient	Volume	Price (GBP)	Applications	Clinical Data
TESEU Fungal Nail Treatment	Undecylenic acid 10%	10ml	£10.99	~200 (brush)	65% improvement at 6 months (JDS 2019)
Excilor 3 Actions	Climbazole + lactic acid + urea	7ml	£14.99	400+	Clinically proven (manufacturer data)
Curanail 5%	Amorolfine 5%	3ml	£24.99	~100	54.7% cure at 12 months (BJD 2007)
Loceryl 5%	Amorolfine 5%	2.5ml	£19.99	~50	46–55% mycological cure (JAAD 2005)
Scholl Fungal Nail Treatment	ProBeauty (proprietary blend)	3.8ml	£14.99	~180	No published clinical data

Active Ingredients and Mechanism

Undecylenic acid 10% w/w. Undecylenic acid is an FDA-approved antifungal agent (21 CFR 333.310) effective against Trichophyton rubrum and T. mentagrophytes, the causative organisms in 90% of fungal nail infections. The formula lowers nail pH to 4.0, disrupting fungal cell membrane integrity.

Product Name: TESEU Fungal Nail Treatment Liquid
Net Content: 0.7 fl.oz (20ml)
Packaging Size (L×W×H): 4.50×2.40×9.50 cm / 1.77×0.94×3.74 in
Applicable For: Discolored Nails, Nail Psoriasis, Fungal Nails, Brittle & Aging Nails
Suitable Areas: Fingernails, Toenails
Package Includes: 1× Fungal Nail Liquid, 1× Precision Brush Applicator

For external use only.
Do a patch test first.
Stop use if irritation occurs.
Avoid eyes and broken skin.
A temporary yellow tint from the liquid is normal and will fade as the nail heals.
NOT for pregnant women and children under 10 years old.

Why Choose TESEU?

Features	spa TESEU	Standard Brands
Formula Strength	Advanced nail-care formula	Basic antifungal formula
Action & Penetration	Reaches nail surface & surrounding skin	Surface-focused care
Nail Care Support	Supports healthier-looking nails	Targets fungal concerns only
Comfort & Feel	Lightweight & comfortable	Heavy or irritating feel
Care Range	Discolouration, cracks & brittle nails	Limited concerns
Application Design	Precision brush, easy & mess-free	Less precise application

Frequently Asked Questions

How long does fungal nail treatment take to work?

Remove nail polish before each application. Polish blocks antifungal penetration. Wait 60 seconds after application before reapplying polish, or avoid it during active treatment.

Is fungal nail infection contagious?

You’ll typically start to notice improvements—like clearer, healthier-looking nails—within a few weeks. But because nails grow slowly, full regrowth can take a few months. Stick with it, and you’ll see the difference.

Can I cut away the infected nail?

Amorolfine 5% achieves 46–55% mycological cure. Undecylenic acid 10% shows 65% improvement in mild-to-moderate cases. Results vary by severity. Severe infections may require oral terbinafine (GP prescription).

What happens if I stop treatment early?

Yes, but wear pool shoes. Dry feet thoroughly after swimming. Apply treatment after showering, not before swimming. Pool areas are primary T. rubrum transmission sites.

What are the active ingredients, and how do they work?

Evidence-led, not trial-and-error. Chlorhexidine acetate cleanses, Keratin reinforces, and a traditional botanical complex supports nail health. Used daily, it’s gentle yet effective. Most notice changes within a week—full recovery takes time, but sticking with it pays off.

Can I use it with nail polish or artificial nails?

For it to work properly, it needs direct contact with the bare nail—so we’d recommend holding off on polish or artificial nails while you’re using it. Anything on top just gets in the way of absorption. Think of it as giving the treatment room to do its job—you’ll see better results faster.

Are there any side effects?

Used as directed, side effects are rare. Some people might notice a bit of temporary redness or mild irritation around the area—nothing major, and it usually settles quickly. If it does persist, just stop using it and have a word with your pharmacist. But most users sail through with no issues at all.

Do I need to file my nail before applying the liquid?

Yes, it’s recommended to file the surface of the affected nail before application. This removes the top layers and allows the liquid to penetrate and soak into the fungus better.