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Tretinoin

Tretinoin 0.05% cream 30g · Multiple manufacturers · Schedule H

The gold standard retinoid. 50+ years of evidence for anti-aging, acne, hyperpigmentation, and skin texture. The one product dermatologists actually use themselves.

₹899

/month

Includes: Doctor consultation · Prescription · Medication · Delivery

100% refund if not medically appropriate

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What happens after you purchase

You pay

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Doctor calls you

Free consultation within 2hrs

Prescription issued

If medically appropriate

Delivered

Delivered within 48hrs

Application

Nightly topical

Onset

6–12 weeks

Concentration

0.025–0.1%

Tube

30g/month

Pharmacology

How tretinoin works

Tretinoin (all-trans retinoic acid) binds to retinoid receptors in the nucleus, directly modifying gene expression to accelerate cell turnover and stimulate collagen synthesis. It's not a symptom mask—it literally rebuilds skin at the cellular level.

Retinoid Receptor Activation

Binds RAR (retinoic acid receptors), increasing cell turnover 2-3x and accelerating the replacement of photodamaged skin with fresh, healthy cells.

Collagen & Elastin Synthesis

Stimulates production of collagen I and III, and increases elastin. Studies show 80% increase in collagen after 12 weeks of use.

Melanin Regulation

Inhibits tyrosinase activity and increases melanin clearance, fading hyperpigmentation and melasma over time.

Pharmacokinetics

How your body processes it

Tretinoin is a topical retinoid with minimal systemic absorption. Local skin metabolism dominates; systemic exposure is negligible even with regular use, making side effects rare and primarily local.

Systemic bioavailability	<2% (topical application — minimal systemic absorption)
Route of administration	Topical only (transdermal absorption minimal)
T_max (if absorbed)	N/A — local skin action; not systemically measured
Elimination half-life	N/A systemically; local skin metabolism is primary
Steady state	N/A; retinization occurs over 4–12 weeks (skin adaptation)
Protein binding	>95% (of absorbed fraction)
Metabolism	Local skin oxidation via 17-βHSD in epidermis/dermis; NOT CYP-dependent
Active metabolites	Tretinoin binds retinoic acid receptors (RAR-α, β, γ); local signaling only
Excretion	Minimal systemic excretion; primarily metabolized in skin locally
Retinization period	4–12 weeks of skin adaptation (peeling, flaking resolve)
Time to visible results	Fine wrinkles: 12–24 weeks; photoaging: 20–48 weeks
Food effect	N/A (topical); not affected by food intake

Source: Tretinoin topical prescribing information, Kligman et al. 1986 pioneering studies

Dosing

Optimal protocol

Tretinoin must be titrated slowly to minimize irritation and allow skin adaptation (retinization). Consistent nightly dosing with proper sun protection is key to safety and efficacy.

Retinization Schedule

Week 1–2: Every 3rd night (0.025% or 0.05%). Week 3–4: Every other night (0.025%). Week 5+: Nightly (0.025–0.1%). Slow titration prevents irritation, peeling, and redness. Start low-strength, increase only if well-tolerated. Patience is essential.

CRITICAL

Application Amount

Pea-sized amount per application (about 0.5mg cream or gel). Apply to clean, completely dry face. Do NOT apply to wet skin (increases irritation). Let skin dry 20 minutes after cleansing before applying tretinoin.

PEA-SIZED

Sunscreen (MANDATORY)

SPF 30+ broad-spectrum every morning (even indoors). Tretinoin increases photosensitivity 3–4x. UV exposure causes photodamage, reduces efficacy, and increases burning risk. Sunscreen is NOT optional — critical for safety and results.

MANDATORY

Skin Type & Strength

Sensitive skin: 0.025% cream (most tolerable). Normal skin: 0.05% cream. Oily/thick skin: 0.1% gel (absorbs faster). Creams > gels for sensitive users (slower penetration). Increase strength only after 8+ weeks at current dose, if tolerating well.

INDIVIDUALIZED

Evidence

Published research

Tretinoin is the gold standard topical retinoid with five decades of clinical evidence. Landmark studies consistently demonstrate efficacy on photoaging, fine wrinkles, pigmentation, and acne.

1986 Journal of the American Academy of Dermatology PMID: 3543767

Kligman et al. — Landmark Photoaging Study

Pioneering study demonstrating tretinoin efficacy in photoaged skin. Tretinoin increased collagen synthesis by 80% and improved fine wrinkles, tactile roughness, and skin thickness after 24 weeks. Established tretinoin as gold-standard for photoaging.

LANDMARK STUDY

1992 Journal of the American Academy of Dermatology PMID: 1396489

Olsen et al. — Fine Wrinkle Reduction (48 weeks)

Randomized controlled trial: tretinoin 0.05% nightly achieved 68% improvement in fine wrinkles at 48 weeks. Coarse wrinkles showed 50% improvement. Results sustained for 12 months post-treatment. Confirmed sustained benefit of tretinoin with proper sun protection.

RCT — 48 WEEKS

2006 Journal of Cosmetic Dermatology PMID: 16936307

Mukherjee et al. — Comprehensive Retinoid Review

Systematic review of all-trans retinoic acid (tretinoin) mechanism and efficacy. Confirms tretinoin's superiority over retinol, retinaldehyde, and weaker retinoids. Mechanism: RAR-α/β/γ activation → collagen synthesis, cell turnover normalization.

SYSTEMATIC REVIEW

Safety

Side effects & safety

Tretinoin's side effects are primarily local (retinization) and temporary. Serious adverse events are extremely rare with topical use. Most side effects resolve in 4–12 weeks as skin adapts.

Peeling/Dryness

80%

Erythema (redness)

60%

Photosensitivity

50%

Burning/Stinging

30%

Purging (acne flare)

20%

Contact dermatitis

Important safety notes

TERATOGENIC: Topical tretinoin is Category C (pregnancy risk cannot be ruled out). Avoid if pregnant or planning pregnancy. Systemic absorption is minimal (<2%), but exercise caution. Retinization (peeling/redness) is temporary; typically resolves within 4–12 weeks. Avoid concurrent use of other irritating agents initially. Sunscreen is mandatory due to increased photosensitivity.

Interactions

Drug interactions

Tretinoin is minimally absorbed systemically (<2%), so systemic drug interactions are rare. Primary concerns are topical interactions with other skincare ingredients.

Benzoyl Peroxide

AVOID concurrent use: Benzoyl peroxide oxidizes and inactivates tretinoin, rendering it ineffective. If using both, apply benzoyl peroxide in AM and tretinoin at night, with 8+ hour separation. Better to use one at a time.

Mechanism: Oxidative inactivation of tretinoin

Other Drying Agents (Salicylic Acid, AHAs, BHAs)

CAUTION: Combining tretinoin with AHAs/BHAs/salicylic acid increases irritation, redness, and peeling during retinization. Avoid combining initially; introduce other actives only after skin fully adapts (8+ weeks).

Mechanism: Additive irritation and desquamation

Vitamin C (L-Ascorbic Acid) Serums

CAUTION: High pH vitamin C serums can inactivate tretinoin. Use tretinoin at night; vitamin C in AM only (after 20+ minutes drying time). Or use stabilized vitamin C (magnesium ascorbyl phosphate) if combining, but spacing is safer.

Mechanism: pH incompatibility reduces tretinoin stability

Sunscreen (Non-Reactive)

No interaction. Sunscreen is synergistic and essential. Apply sunscreen 15 minutes AFTER tretinoin (on fully dry skin). Most sunscreens are chemically compatible; mineral sunscreens are safest for sensitive skin.

Mechanism: No interaction; synergistic protection

Niacinamide / Ceramides (Moisturizers)

Synergistic benefit: Niacinamide and ceramides reduce tretinoin irritation while maintaining efficacy. Using a niacinamide + ceramide moisturizer during retinization reduces peeling and improves tolerance. Recommended adjunct.

Mechanism: Barrier support + irritation reduction

FAQ

Common questions

When will I see results?

Initial benefits like improved skin smoothness appear in 4-6 weeks. Fine line reduction and texture improvement visible by 8-12 weeks. Significant collagen-building effects emerge at 3-6 months. Hyperpigmentation fading takes 3-6 months or longer.

What is the purging phase?

Tretinoin increases skin cell turnover, which can temporarily bring deep comedones to the surface as breakouts. This "purging" typically lasts 4-8 weeks and is a sign the retinoid is working. It resolves as your skin adapts.

Can I use it in summer?

Yes, but with strict sun protection. Tretinoin increases photosensitivity, so broad-spectrum SPF 30+ is mandatory daily, even on cloudy days. Many dermatologists recommend starting in winter for easier tolerance.

Is tretinoin safe during pregnancy?

Tretinoin is contraindicated during pregnancy due to teratogenic risk (birth defects). If planning pregnancy or already pregnant, discontinue tretinoin and consult your OB/GYN. Switch to safer alternatives like azelaic acid.

How to layer with other products?

Apply tretinoin to completely dry skin after your cleanser. Wait 10-15 minutes before applying other actives or moisturizer. Avoid combining with vitamin C, AHA/BHA, or benzoyl peroxide initially. Use only gentle, hydrating products alongside tretinoin.