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Skincare Fundamentals

Does Tretinoin Help With Wrinkles? What the Trials Show

By · Published October 18, 2026 · 13 min read

Start with our pillar guide: What Is the Skin Barrier? The Science of Hydration, Ceramides and Occlusives, or browse all Skincare Fundamentals articles.

Does tretinoin help with wrinkles? Yes. Tretinoin is a prescription retinoid. In randomized trials of 30 to 296 adults lasting 16 weeks to 2 years, it reduced fine sun-related wrinkles more than its plain base cream did. The gains are moderate: in a 296-person trial, 68% improved on 0.05% vs 43% on the base cream (Olsen et al., 1992). Evidence: well-established.

Key takeaways

  • Tretinoin beat its vehicle (the same cream without the drug) for fine wrinkles in several controlled trials, including one that ran 2 years. Well-established.
  • Higher strength isn't automatically better. Over 48 weeks, 0.025% worked about as well as 0.1% and caused less irritation. In a separate 24-week trial, 0.01% did not clinically beat the vehicle.
  • Tazarotene 0.1% (Tazorac) improved some signs by week 2 and was still improving at week 24. Its label says it is contraindicated in pregnancy.
  • In 1 trial, adapalene 0.3% was non-inferior to tretinoin 0.05% for wrinkles. Limited.
  • Redness and flaking cluster in the first 4 weeks and tend to ease with continued use.

This is our hub for prescription retinoids and wrinkles. If you're building a routine, see whether you can use retinol every night, pairing hyaluronic acid with retinol and our full skincare protocol.

How does tretinoin help with wrinkles?

Tretinoin is all-trans retinoic acid, the active form of vitamin A, applied directly to the skin. In biopsies, it thickens the epidermis (outer skin layer) and adds new collagen just under it. That is the likely reason treated skin looks smoother.

A retinoid is any compound derived from vitamin A or acting like it, from cosmetic retinol to prescription drugs. Tretinoin needs no conversion step in the skin, which is part of why it is both stronger and more irritating than retinol.

The foundational biopsy work compared 0.05% tretinoin cream with vehicle on the face and forearms. It found a thicker epidermis, fewer atypical cells, new collagen in the papillary dermis (the upper dermis), new blood vessels and more evenly spread pigment (Kligman et al., 1986). Sample size and duration are not reported in the abstract.

In a 4-month, vehicle-controlled forearm study of 6 people using 0.1% tretinoin, treated skin had 1.34 anchoring fibrils per µm vs 0.65 on vehicle (Woodley et al., 1990). Anchoring fibrils are tiny structures that tether the epidermis to the dermis. The sponsor isn't reported. In a 2-year trial, procollagen (a collagen precursor) rose by month 12 (p=0.0074) (Kang et al., 2005). Evidence: moderate (consistent biopsy findings across separate studies, some very small).

Does tretinoin help with wrinkles in controlled trials?

Yes. Every large vehicle-controlled tretinoin trial we reviewed found more improvement than the vehicle, at 16 weeks, 24 weeks and 2 years.

  • Weiss et al., 1988 (JAMA): In this randomized, double-blind, vehicle-controlled trial (30 completers, 16 weeks, 0.1%), 14 of 15 tretinoin-treated faces improved vs 0 of 15 on vehicle. Side effects were limited to irritation. The authors were at the University of Michigan, and the sponsor isn't reported in the abstract or PubMed record (Weiss et al., 1988).
  • Weinstein et al., 1991: In this multicenter double-blind RCT (n=251, 24 weeks, 0.05% and 0.01% emollient cream), 79% improved on 0.05% vs 48% on vehicle. Fine wrinkling, mottling, roughness and laxity all improved, and side effects were usually mild. The authors were at UC Irvine, and the sponsor isn't reported in the abstract or PubMed record (Weinstein et al., 1991).
  • Kang et al., 2005: In this placebo-controlled RCT (n=204, up to 2 years, 0.05% emollient cream), fine and coarse wrinkling, mottling, lentigines (sun spots) and sallowness improved more than on placebo (p<0.05). Atypia and elastosis did not increase. The authors were at the University of Michigan, and the sponsor isn't reported in the abstract or PubMed record (Kang et al., 2005).

Note how often the vehicle groups also improved (43–48%). Part of what people see in the mirror comes from moisturizing and steady skincare. Tretinoin's real effect is the gap between the two arms. Evidence: well-established.

Which tretinoin strength helps with wrinkles most?

The best-supported strength is 0.05%. In 1 trial, 0.025% worked about as well as 0.1% with less irritation. In another, strengths of 0.01% and lower did not clinically beat the vehicle.

The dose-response trial ran 24 weeks in 296 people and compared 0.05%, 0.01% and 0.001% with vehicle. On 0.05%, 68% improved vs 43% on vehicle, and 26% vs 11% were rated "excellent/good." The 0.01% and 0.001% strengths were not significantly different from vehicle clinically, although 0.01% did change biopsies (Olsen et al., 1992). The authors were at Duke, and the sponsor isn't reported in the abstract or PubMed record.

A 48-week double-blind RCT followed 99 completers: 32 on 0.1%, 35 on 0.025% and 32 on vehicle. Both strengths improved photoaging with no significant difference in efficacy. Epidermal thickness rose 30% and 28%, vs an 11% drop on vehicle. Irritation was significantly greater on 0.1%, and the authors concluded the improvement was not driven by irritation (Griffiths et al., 1995). The authors were at the University of Michigan, and the sponsor isn't reported in the abstract. Evidence: well-established for "lower strength can work."

A recurring question in tretinoin communities is whether to jump straight to 0.1%. The Griffiths data suggest it adds irritation without adding results. Your prescriber picks the strength. For context, Renova 0.02% is a wrinkle-labeled tretinoin cream, and its label states that it "does not remove wrinkles or repair sun-damaged skin" (Renova label, DailyMed).

How long does tretinoin take to help with wrinkles?

Expect months, not weeks. Trials measured their main results at 16 to 24 weeks, and improvement kept building at 48 weeks and 2 years.

The 16-week Weiss trial is the earliest controlled time point with a clear result (Weiss et al., 1988). Its open-label extension followed 21 people to 10 months and 16 to 22 months. Gains in wrinkles and texture held even at a lower dose or frequency, and lentigines fell 71% (Ellis et al., 1990). Evidence: early/preliminary (uncontrolled extension).

In r/30PlusSkinCare, people commonly report texture changes within weeks, softer lines around 3 to 6 months and fuller results at 6 to 12 months. That roughly fits the trial timelines, but anecdotes aren't evidence.

Does adapalene help with wrinkles?

Probably, but the evidence is thinner than for tretinoin. In 1 trial, prescription adapalene 0.3% was non-inferior to tretinoin 0.05%. In another, a 0.1% cream beat no treatment.

Adapalene is a synthetic retinoid, originally developed for acne. A 0.1% gel is sold over the counter in the US, and 0.3% is prescription-only. For midlife hormonal breakouts, see perimenopause acne.

In a 24-week investigator-blinded RCT that included biopsies, adapalene 0.3% gel was non-inferior to tretinoin 0.05% cream for global photoaging, wrinkles around the eyes and forehead wrinkles, with similar safety (Bagatin et al., 2018). For the thin skin of the eye area itself, see our guide to tretinoin under eyes. "Non-inferior" means adapalene was not meaningfully worse by a margin set in advance. It doesn't mean adapalene was better. Sample size isn't reported in the abstract. The authors were at the Federal University of São Paulo, and the sponsor isn't reported in the abstract or PubMed record.

A 6-month RCT in Vietnam with 58 completers compared adapalene 0.1% cream with no treatment, with both arms using sunscreen and moisturizer. Skin Ageing Scores went from 38.2 to 32.5 on adapalene vs 38.5 to 37.9 on no treatment, a mean difference of −5.40 (95% CI −7.26 to −3.54) (Vietnam adapalene RCT, 2025). The authors were at Bach Mai Hospital and Hanoi Medical University. There was no vehicle cream, so the comparison was unblinded. Evidence: limited.

How long does Tazorac take to work for wrinkles?

In a 568-person trial, tazarotene 0.1% cream beat vehicle on some signs by week 2. It was still improving at week 24, when the trial ended.

Tazarotene is a synthetic prescription retinoid sold as Tazorac. The 568-person multicenter double-blind RCT found it beat vehicle on fine wrinkles and 7 other photoaging signs, and the effects had not plateaued by week 24 (Kang et al., 2005).

A second double-blind RCT (n=563, 24 weeks plus a 28-week open extension) found significant gains in fine wrinkling, mottling and pore size. In that trial, 20 of 283 people stopped tazarotene because of adverse events, vs 1 of 280 on vehicle (Phillips et al., 2002). The authors were at Boston University.

An investigator-masked RCT of 349 people compared several tazarotene strengths with tretinoin 0.05% for 24 weeks. Global success was 67% on tazarotene 0.1%, 55% on tretinoin 0.05% and 22% on vehicle, with about 58 people per arm. Higher tazarotene strengths were more irritating (Kang et al., 2001). None of the 3 trials reports a sponsor in its abstract or PubMed record. Evidence: moderate (3 large, consistent RCTs; 2 share a lead author, and none reports a sponsor).

Is retinol as good as tretinoin for wrinkles?

Not on current evidence. Retinol is a cosmetic retinoid that skin has to convert before it acts. It is weaker than tretinoin, and its wrinkle trials are smaller and less consistent.

A human dose-finding study measured the lowest concentration of each retinoid that switched on a retinoid-responsive enzyme. The thresholds were 0.001% for retinoic acid, 0.01% for retinaldehyde, 0.025% for retinol and 0.6% for retinyl palmitate. The authors called retinol weaker than retinoic acid but noted that it penetrates well (Duell et al., 1997).

In a double-blind, vehicle-controlled split-arm trial, 36 adults with a mean age of 87 applied 0.4% retinol up to 3 times a week for 24 weeks. Fine wrinkling scores improved by 1.64 vs 0.08 on vehicle (P<.001) (Kafi et al., 2007). The authors were at the University of Michigan. An independent systematic review of 9 OTC retinol trials found that 4 showed no difference from vehicle, and it rated the other 5 as weak evidence with major methodological flaws (Spierings, 2021). Evidence: limited. For a head-to-head, see retinol versus peptides.

How do the retinoids compare for wrinkles?

Tretinoin has the deepest evidence, tazarotene the largest single trials, and adapalene and retinol the thinnest. The table below shows the best trial we found for each one.

Ingredient Rx/OTC (US) Best trial n Duration Result Evidence label
Tretinoin 0.05% Rx Olsen 1992, double-blind RCT 296 24 weeks 68% improved vs 43% vehicle Well-established
Tretinoin 0.025% vs 0.1% Rx Griffiths 1995, double-blind RCT 99 48 weeks Both beat vehicle; no efficacy difference; 0.1% more irritating Well-established
Tazarotene 0.1% (Tazorac) Rx Kang 2005, double-blind RCT 568 24 weeks Beat vehicle on fine wrinkles + 7 signs; not plateaued Moderate
Adapalene 0.3% Rx Bagatin 2018, investigator-blinded RCT Not reported in abstract 24 weeks Non-inferior to tretinoin 0.05% Limited
Adapalene 0.1% OTC Vietnam RCT 2025, unblinded RCT 58 6 months Ageing score −5.40 vs no treatment Limited
Retinol 0.4% Cosmetic Kafi 2007, split-arm RCT 36 24 weeks Fine wrinkling −1.64 vs −0.08 Limited

A 2024 systematic review of 25 studies comparing tretinoin with other topicals found the alternatives were better in 7, equivalent in 13 and worse in 3. Most alternatives were less irritating, but most studies were poor quality or showed bias (Siddiqui et al., 2024). The review's authors were at New York Medical College.

What side effects come with using tretinoin for wrinkles?

Expect redness, scaling and burning, mostly in the first month. In trials, these reactions tended to ease with continued use.

In a 44-week trial of 355 people comparing tretinoin with retinaldehyde, 44% of the tretinoin group had redness, 35% had scaling and 29% had burning or itching in weeks 1 to 4. All 3 were significantly less common with retinaldehyde (p<0.0001) (Fluhr et al., 1999). The sponsor isn't reported in the abstract or PubMed record. In the Ellis extension, the retinoid reaction "diminished as therapy proceeded" (Ellis et al., 1990).

Retinization is the informal name for that early adjustment period. The trial abstracts above don't use the term. In a 15-day split-face study of 30 people on tretinoin or isotretinoin, the side that got moisturizer twice a day had significantly less dryness, roughness and peeling (moisturizer adjunct study, 2006). Evidence: early/preliminary. For layering details, see peptides and retinol. For timing around injections, see tretinoin after Botox.

Who should avoid tretinoin and other retinoids?

Pregnancy is the main line, and the labels differ by product. Tazarotene is contraindicated, and the wrinkle-labeled tretinoin cream says not to use it in pregnancy.

  • Tazarotene (Tazorac cream): The label says it is contraindicated in pregnancy. It requires a negative pregnancy test within 2 weeks before starting, starting during a menstrual period, and effective contraception for anyone who can become pregnant (Tazorac label, DailyMed).
  • Tretinoin 0.02% (Renova): The label says it "should not be used during pregnancy." It tells patients to contact their doctor immediately if they become pregnant while using it, and notes that wrinkle treatment "may be postponed" until after nursing (Renova label). The Retin-A Micro label says observational data "have not established a drug-associated risk" and notes those data have methodologic limits (Retin-A Micro label).
  • Adapalene: The Rx 0.3% gel label says clinical trial data in pregnancy "are insufficient to establish a drug-associated risk" (Differin 0.3% label). We couldn't retrieve the pregnancy wording on the OTC 0.1% Drug Facts label, so read the package.
  • Retinol and retinaldehyde: These are cosmetics, so no FDA label and no label-based rule exist.

If you're pregnant, trying to conceive or breastfeeding, talk to your clinician before using any retinoid.

Where the evidence stops

  • Who was studied: Most trials enrolled adults who already had moderate photodamage. Whether tretinoin prevents wrinkles in people in their 20s hasn't been tested.
  • Expression lines: We found no controlled data on deep expression lines such as frown lines.
  • Funding: The abstracts and PubMed records of most large trials don't name a sponsor. We don't know who paid for them.
  • Measurement: Results come from grader scales and photo ratings, not millimeters of wrinkle depth.
  • Adapalene: Only 2 trials exist, at different strengths, and neither used a vehicle control against the 0.3% gel.
  • Comparisons: The comparative literature is mostly poor quality (Siddiqui et al., 2024).
  • Menopause-related skin changes: Wrinkles linked to falling estrogen are a separate question. Small studies of estrogen cream for the face cover it.
  • Devices: Tretinoin trials don't test light-based options. For the LED evidence, see does red light therapy work for wrinkles.

FAQ

Can retinol or tretinoin make wrinkles worse?

We found no trial showing lasting worsening. Early dryness and flaking peak in the first 4 weeks (Fluhr et al., 1999), so it's plausible that lines look more visible during that period. That hasn't been proven, and the reaction tends to fade.

Does tretinoin reverse wrinkles or only prevent them?

The trials measured improvement in existing sun damage, including fine and coarse wrinkling over 2 years (Kang et al., 2005). Prevention in younger skin hasn't been tested. The Renova label also says it doesn't remove wrinkles, so expect softening, not reversal.

Should I start with 0.1% tretinoin to get faster results?

The trial data say no. Over 48 weeks, 0.025% matched 0.1% for results, and 0.1% caused significantly more irritation (Griffiths et al., 1995). Your prescriber sets the strength.

Does the flaking from tretinoin ever stop?

For most people in trials, yes. Irritation is concentrated in the first weeks and diminished as treatment continued (Ellis et al., 1990). People in r/tretinoin describe a range from a few weeks to about 5 or 6 months.

Is tretinoin safe to use for years?

In the only 2-year controlled trial (n=204), 0.05% tretinoin did not increase cell atypia or elastosis (Kang et al., 2005). There is no controlled data beyond 2 years.

Can I use tretinoin, tazarotene or adapalene while pregnant or breastfeeding?

The Tazorac label says it is contraindicated in pregnancy, and the Renova label says not to use it during pregnancy. Adapalene labels report insufficient data. Talk to your clinician before using any retinoid if you're pregnant, trying to conceive or breastfeeding.

References

Full article titles are listed on each linked PubMed record.

  1. Kligman et al. J Am Acad Dermatol. 1986. 0.05% tretinoin vs vehicle, histology; n and duration not reported in abstract. https://pubmed.ncbi.nlm.nih.gov/3771853/
  2. Weiss et al. JAMA. 1988. Randomized double-blind vehicle-controlled; n=30 completers; 16 weeks. https://pubmed.ncbi.nlm.nih.gov/3336176/
  3. Ellis et al. J Am Acad Dermatol. 1990. Open-label extension; 21 to 10 months, 16 to 22 months. https://pubmed.ncbi.nlm.nih.gov/2229490/
  4. Woodley et al. JAMA. 1990. Vehicle-controlled; n=6; 4 months. https://pubmed.ncbi.nlm.nih.gov/2342217/
  5. Weinstein et al. Arch Dermatol. 1991. Multicenter double-blind RCT; n=251; 24 weeks. https://pubmed.ncbi.nlm.nih.gov/2024983/
  6. Olsen et al. J Am Acad Dermatol. 1992. Multicenter double-blind RCT; n=296; 24 weeks. https://pubmed.ncbi.nlm.nih.gov/1552056/
  7. Griffiths et al. Arch Dermatol. 1995. Double-blind RCT; n=99 completers; 48 weeks. https://pubmed.ncbi.nlm.nih.gov/7544967/
  8. Kang et al. Am J Clin Dermatol. 2005. Placebo-controlled RCT; n=204; up to 2 years. https://pubmed.ncbi.nlm.nih.gov/16060712/
  9. Kang et al. Arch Dermatol. 2001. Investigator-masked RCT; n=349; 24 weeks. https://pubmed.ncbi.nlm.nih.gov/11735710/
  10. Phillips et al. Arch Dermatol. 2002. Double-blind RCT; n=563; 24 weeks + 28-week open extension. https://pubmed.ncbi.nlm.nih.gov/12437455/
  11. Kang et al. J Am Acad Dermatol. 2005. Multicenter double-blind RCT; n=568; 24 weeks. https://pubmed.ncbi.nlm.nih.gov/15692472/
  12. Bagatin et al. Eur J Dermatol. 2018. Investigator-blinded non-inferiority RCT; n not reported in abstract; 24 weeks. https://pubmed.ncbi.nlm.nih.gov/30105991/
  13. Authors per PubMed record. Indian J Dermatol Venereol Leprol. 2025. RCT vs no treatment; 58 completers; 6 months. https://pubmed.ncbi.nlm.nih.gov/40990960/
  14. Kafi et al. Arch Dermatol. 2007. Double-blind vehicle-controlled split-arm; n=36; 24 weeks. https://pubmed.ncbi.nlm.nih.gov/17515510/
  15. Duell et al. J Invest Dermatol. 1997. Human in vivo dose-finding; n not reported in abstract. https://pubmed.ncbi.nlm.nih.gov/9284094/
  16. Fluhr et al. Dermatology. 1999. Patch test (n=6) + 44-week clinical comparison (n=355). https://pubmed.ncbi.nlm.nih.gov/10473963/
  17. Spierings. J Clin Aesthet Dermatol. 2021. Systematic review of 9 vehicle-controlled trials. https://pubmed.ncbi.nlm.nih.gov/34980969/
  18. Siddiqui et al. Am J Clin Dermatol. 2024. Systematic review of 25 studies. https://pubmed.ncbi.nlm.nih.gov/39348007/
  19. Authors per PubMed record. J Drugs Dermatol. 2006. Split-face; n=30; 15 days. https://pubmed.ncbi.nlm.nih.gov/17373148/
  20. RENOVA (tretinoin) cream 0.02% label. Bausch Health. DailyMed, SPL published Feb 26, 2026. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=9f0a0e8d-1051-48a4-80c5-1bd260dd9c36
  21. TAZORAC (tazarotene) cream label. DailyMed. https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=021744d1-a6d7-4ad6-99c2-7187c24e64c6
  22. DIFFERIN (adapalene) Gel 0.3% label. Galderma. DailyMed, revised 12/2023. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=a0031324-92a6-4c11-90e2-c2818f7278ec ; RETIN-A MICRO label, accessdata.fda.gov: https://www.accessdata.fda.gov/drugsatfda_docs/label/2026/020475Orig1s029lbl.pdf

Disclosure: This article contains no affiliate links, and no brand paid for or reviewed it. It summarizes published research and FDA labels for general education. It is not medical advice. Tretinoin, tazarotene and adapalene 0.3% are prescription drugs, so talk to a clinician before starting, stopping or changing any treatment.

For educational purposes only; not medical advice. See our disclaimer and research method.