What are the instructions for use of topical Winlevi (clascoterone) cream, Finagel (ciclopirox) nail lacquer, Retin‑A (tretinoin) cream or gel, and Benzaclin (benzoyl peroxide 5% + clindamycin 1%) gel?

Patient Instructions for Topical Acne and Antifungal Medications

Winlevi (Clascoterone 1% Cream)

Apply Winlevi twice daily (morning and evening) to clean, dry skin on all affected areas of the face. 1

Application Steps:

• Cleanse the affected area gently and allow skin to dry completely
• Apply a thin, uniform layer (approximately 1 gram) to the entire affected area
• Use twice daily: once in the morning and once in the evening
• Avoid eyes, mouth, and mucous membranes—if accidental contact occurs, rinse thoroughly with water 1

Important Warnings:

• Do not apply to cuts, abrasions, eczema, or sunburned skin 1
• Limit use of other potentially irritating products (medicated/abrasive soaps, products with high alcohol content, astringents) 1
• Watch for local irritation (redness, itching, dryness, peeling)—these occur in 4-12% of patients 1
• For topical use only—not for oral, vaginal, or eye use 1

Clinical Context:

Clascoterone is recommended by the 2024 AAD guidelines as a conditional recommendation for acne treatment 2. It works as an androgen receptor inhibitor and demonstrates efficacy across all age groups ≥12 years, with treatment success rates of 18-20% versus 6-9% with vehicle at 12 weeks 3. The medication is stable when combined with other topical acne treatments including tretinoin, adapalene, and benzoyl peroxide 4.

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Finacea/Finagel (Ciclopirox 8% Nail Lacquer)

Apply ciclopirox nail lacquer once daily to all affected nails for up to 48 weeks on toenails or 24 weeks on fingernails. 5

Application Steps:

• File down as much diseased nail as possible before each application 5
• Apply the lacquer to the entire nail plate and approximately 5 mm of surrounding skin 5
• Use once daily consistently
• Continue treatment for up to 48 weeks for toenails or 24 weeks for fingernails 5

Expected Results:

• Mycological cure rates: 29-36% (versus 9-11% with placebo) in US studies 6
• Higher cure rates (47-86%) reported in international studies with varying protocols 6
• Most effective for mild to moderate onychomycosis without lunula involvement 5

Side Effects:

• Periungual erythema and nail fold redness are most common 5
• Local burning, pruritus, and application site reactions may occur but are typically mild and transient 6

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Retin-A (Tretinoin Cream/Gel)

Apply a pea-sized amount of tretinoin once daily at bedtime to clean, dry skin, starting with every-other-night application initially.

Application Steps:

• Wait 20-30 minutes after cleansing before applying to ensure skin is completely dry
• Use a pea-sized amount for the entire face
• Apply to all acne-prone areas, not just visible lesions
• Start with every-other-night application for 2-4 weeks, then advance to nightly as tolerated 7
• Avoid eyes, mouth, and mucous membranes

Critical Instructions:

• Use sunscreen daily—tretinoin increases photosensitivity
• Expect initial irritation (redness, peeling, dryness) during the first 2-4 weeks 7
• Do not use on eczematous or sunburned skin
• Improvement typically takes 8-12 weeks to become apparent 7

Guideline Support:

The 2024 AAD guidelines give topical retinoids a strong recommendation with moderate certainty of evidence for acne treatment 2. Tretinoin should be combined with benzoyl peroxide when used with topical antibiotics to prevent antibiotic resistance 2.

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Benzaclin (Benzoyl Peroxide 5% + Clindamycin 1% Gel)

Apply Benzaclin gel twice daily (morning and evening) to clean, dry skin on all affected areas.

Application Steps:

• Cleanse and dry skin thoroughly before application
• Apply a thin layer to the entire affected area
• Use twice daily as directed 8
• Avoid eyes, mouth, and mucous membranes

Key Advantages:

• Fixed-dose combination prevents antibiotic resistance—benzoyl peroxide prevents development of clindamycin-resistant bacteria 2
• More effective than either component alone for reducing inflammatory lesions 8
• Rapid onset: improvement typically seen within 2-4 weeks 8

Common Side Effects:

• Application-site dryness, irritation, peeling, and erythema 8
• Benzoyl peroxide may bleach fabrics—use white towels and pillowcases

Guideline Context:

The 2024 AAD guidelines give strong recommendation (moderate certainty) for fixed-dose combination topical antibiotic with benzoyl peroxide 2. This combination is preferred over topical antibiotic monotherapy, which is explicitly not recommended due to resistance concerns 2.

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General Acne Treatment Principles

Multimodal therapy combining multiple mechanisms of action is recommended as a good practice statement by the 2024 AAD guidelines 2. When using multiple topical medications:

• Apply tretinoin at night
• Apply benzoyl peroxide-containing products in the morning
• Clascoterone can be used twice daily and is stable with other topical acne medications 4
• Always use non-comedogenic moisturizers and broad-spectrum sunscreen daily

Common Pitfall to Avoid:

Do not discontinue treatment prematurely when initial irritation occurs—this is expected and typically resolves with continued use. However, if severe irritation develops, reduce frequency of application rather than stopping completely.