Short answer: Plan on about 6 to 8 laser sessions on the chin, spaced 4 to 8 weeks apart; the American Academy of Dermatology gives 2 to 6 and the Cleveland Clinic 6 to 8 as typical.[1][2] Laser reduces hair a lot but rarely removes all of it, and when the hair is driven by hormones, as in PMOS, new hairs keep being recruited, so most women need occasional maintenance sessions.[3][1] Treating the hormones at the same time, or adding eflornithine cream, gives better results than laser alone.[3][4][6]
The chin is one of the most common places women with hirsutism treat with laser, and one of the most frustrating. Many women have a good first year, then notice new dark hairs creeping back. That is not necessarily a failed treatment. It is often the hormones doing what they did before.
In our 2019 survey of 269 women with hirsutism, 97% removed hair from their face and chin, and 25% had tried laser on their face.[11] This article explains how many sessions to expect, why PMOS hair comes back, which laser suits which skin, and when electrolysis is the better choice.
How many laser sessions does the chin need?
Plan on about 6 to 8 sessions. The Cleveland Clinic gives 6 to 8 treatments as typical, while the American Academy of Dermatology (AAD) says most patients need 2 to 6 to remove the hair.[2][1] The Endocrine Society notes that results improve with the number of treatments.[3]
Sessions are spaced out because hairs grow in cycles and are not all growing at the same time. Facial hair has a growth (anagen) phase of about 4 months.[3] The AAD says most patients can be treated every 4 to 6 weeks, and the Cleveland Clinic gives 6 to 8 weeks.[1][2] Face treatments are often at the shorter end: the eflornithine trial described below treated the upper lip every 4 weeks.[4]
| Question | What to expect | Source |
|---|---|---|
| Number of sessions | 2 to 6 (AAD) or 6 to 8 (Cleveland Clinic); results improve with more sessions | [1][2][3] |
| Time between sessions | 4 to 6 weeks (AAD) or 6 to 8 weeks (Cleveland Clinic); upper lip every 4 weeks in a trial | [1][2][4] |
| Right after each session | Near-complete hairlessness for about 4 to 6 weeks | [3] |
| Laser alone, up to 6 sessions (upper lip) | Complete or almost complete removal at 68% of treated sides at the end of the study | [4] |
| Laser plus eflornithine, same study | Complete or almost complete removal at 94% of treated sides | [4] |
| Women with PCOS, 5 high-power sessions over 6 months | Self-rated facial hair severity fell from 7.3 to 3.6 out of 10 (low-power group: 7.1 to 6.1) | [7] |
| Long term | “Permanent reduction” means at least 30% fewer hairs beyond one full growth cycle; 100% removal is rare | [3] |
| Maintenance | Often needed to keep the area clear | [1] |
Why does chin hair come back after laser, especially with PMOS?
Chin hair comes back because laser treats the hairs you have now, not the hormones that create new ones. In PMOS, the condition previously called polycystic ovary syndrome (PCOS), high androgens keep turning fine, light vellus hairs into coarse, dark terminal hairs.[10][3] Laser can disable the follicles it hits, but fine vellus hairs carry too little pigment to be treated, so some of them can still be converted later.
The AAD says that after a full course, most patients stay hair free for months or even years, and that maintenance sessions may be needed to keep the area clear.[1] The Cleveland Clinic adds that hair that grows back is usually lighter and thinner than before.[2] The Endocrine Society’s guideline states that photoepilation rarely achieves 100% hair removal.[3]
We could not find good long-term studies that compare how quickly hair returns in women with PMOS versus women without it. A 2024 systematic review in JAMA Dermatology found only 6 studies, with 423 patients, on laser and light treatments in PCOS, and rated the certainty of evidence as limited.[6] So “PMOS hair comes back faster” is a reasonable expectation based on how androgens work, but not a well-measured fact.
Should you combine laser with hormonal treatment?
Evidence: Moderate Yes, if your androgens are high. The Endocrine Society suggests that women with known high androgen levels who choose hair removal also take medication, such as the pill or an anti-androgen.[3] The 2024 JAMA Dermatology review found that a diode laser combined with either metformin or a combined pill gave better results than the diode laser alone, but the evidence comes from few, small studies.[6]
Medication slows the production of new coarse hairs, and laser removes the ones already there. Hormonal treatment takes about 6 months to show an effect on hair, so starting both at once makes sense.[3] See our guides to PMOS hair removal and hirsutism medication.
Does eflornithine cream make laser work better?
Evidence: Moderate Yes, at least in the short term. The Endocrine Society suggests adding eflornithine cream for women who want a faster response to laser.[3] In a randomized trial of 31 women, each woman had laser on her whole upper lip every 4 weeks for up to 6 sessions, and applied eflornithine to one side and a placebo cream to the other. At the end, 93.5% of eflornithine sides had complete or almost complete hair removal, compared with 67.9% of placebo sides.[4] The authors did not check whether the difference lasted beyond 6 months.
A second split-face trial of 54 women found faster hair reduction on the eflornithine side between weeks 6 and 22. By week 34, blinded evaluators no longer saw a difference, although the women still rated the eflornithine side as better.[5]
Which laser is best for your skin type?
The best laser depends on your skin tone, because laser targets pigment and darker skin absorbs more of the energy. The Endocrine Society suggests a long-wavelength, long-pulse device such as an Nd:YAG or diode laser, with skin cooling, for women of color.[3] Tanned or darkly pigmented skin has a higher risk of burns and pigment changes, which is why skin type matters more than brand.[3][2]
For women with PCOS, the 2024 review found that alexandrite lasers outperformed IPL (intense pulsed light) in women with PCOS.[6] The same review noted that few studies included people with skin of color.[6] Ask any provider which device they use, whether they have treated your skin type before, and to do a test patch. If you are considering a home device, read whether at-home IPL works for hirsutism.
Does laser work on blonde, gray or white chin hairs?
No. Laser needs pigment in the hair to work, so it does little for white, gray or blonde hair. The Endocrine Society suggests electrolysis for white or blonde hair, and the Cleveland Clinic notes that laser may not work as well for blonde, gray, white or red hair.[3][2]
Electrolysis treats each follicle with a fine probe and works on any hair color. It is slower per session, but it is often the best tool for the last few stubborn or light hairs after a course of laser. Read how long electrolysis takes to show results and our full comparison of laser, IPL and electrolysis.
Can laser make chin hair grow more?
Yes, occasionally. This is called paradoxical hypertrichosis: new, often finer hair growing in or near the treated area. A 2021 meta-analysis of 22 studies with 9,733 patients found it in about 3% of people overall, almost always on the face and neck, and in only about 0.08% of people treated elsewhere on the body.[8] An earlier Canadian study of 489 patients treated with an alexandrite laser found it in 0.6%.[9]
The meta-analysis found no clear link to laser type or treatment interval, and in 3 of 4 studies that followed it up, the extra hair improved with continued treatment.[8] The Endocrine Society notes it is more common in women of Mediterranean or Middle Eastern background, and suggests these women be warned about it before treatment.[3] If you notice more hair after a few sessions, tell your provider rather than stopping silently.
How much does laser on the chin cost?
Cost depends on the number of sessions, the size of the area and where you live, so we don’t quote a single price. Our laser vs electrolysis cost calculator lets you compare the total cost for your area, including maintenance. Insurance rarely pays, but there are exceptions; see does insurance cover laser or electrolysis for hirsutism.
When should you see a doctor?
Laser treats the hair, not the cause. Before or alongside laser, see a doctor if you have not been assessed for the cause of your hirsutism, or if you notice:
- Chin hair that appears suddenly or spreads quickly
- A deepening voice, an enlarged clitoris or hair loss at the temples
- Irregular or missing periods
Rapid progression and signs of virilization can point to an androgen-producing tumor, which is rare but needs prompt testing.[3] You can start with our hirsutism self-check.
Frequently asked questions
How many laser sessions do I need for chin hair?
Expect about 6 to 8 sessions, spaced 4 to 8 weeks apart, with occasional maintenance afterward. Dermatology sources give a range of 2 to 8.[1][2][3]
Is laser hair removal on the chin permanent?
Laser gives long-term reduction, not guaranteed permanent removal. The Endocrine Society notes it rarely achieves 100% removal, and in hormonal hirsutism new hairs can keep appearing.[3]
Why is my chin hair growing back after laser?
Usually because your hormones keep converting fine hairs into coarse ones, and laser rarely removes every hair. Medication for high androgens and occasional maintenance sessions help.[3][1]
Can laser make facial hair worse?
In about 3% of people, laser triggers extra hair growth, almost always on the face and neck. It often improves with further sessions.[8]
Is electrolysis better than laser for chin hair?
Electrolysis works on any hair color, so it is the better choice for blonde, gray or white hairs. For many dark hairs, laser is faster, and many women use laser first and electrolysis for what is left.[3]
Key takeaways
- Most people need about 6 to 8 chin sessions, every 4 to 8 weeks, plus occasional maintenance.
- Laser rarely removes 100% of hair; in PMOS, high androgens keep creating new coarse hairs.
- Combining laser with hormonal treatment or eflornithine cream gives better results than laser alone.
- Nd:YAG or diode lasers are suggested for darker skin; blonde, gray and white hair need electrolysis.
- About 3% of people get paradoxical extra hair growth, mostly on the face and neck.
Sources
- American Academy of Dermatology. Laser hair removal: FAQs. Accessed October 2026. Link
- Cleveland Clinic. Laser hair removal. Accessed October 2026. Link
- Martin KA, Anderson RR, Chang RJ, et al. Evaluation and Treatment of Hirsutism in Premenopausal Women: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103(4):1233-1257. PubMed 29522147
- Hamzavi I, Tan E, Shapiro J, Lui H. A randomized bilateral vehicle-controlled study of eflornithine cream combined with laser treatment versus laser treatment alone for facial hirsutism in women. J Am Acad Dermatol. 2007;57(1):54-59. PubMed 17270315
- Smith SR, Piacquadio DJ, Beger B, Littler C. Eflornithine cream combined with laser therapy in the management of unwanted facial hair growth in women: a randomized trial. Dermatol Surg. 2006;32(10):1237-1243. PubMed 17034372
- Tan K, Coster T, Mousa A, et al. Laser and light-based therapies for hirsutism management in women with polycystic ovarian syndrome: a systematic review. JAMA Dermatol. 2024;160(7):746-757. doi:10.1001/jamadermatol.2024.0623
- Clayton W, Lipton M, Sherr L, Rustin M, Elford J. A randomised controlled trial of laser treatment among hirsute women with polycystic ovary syndrome. Endocrine Abstracts. 2004;7:P39 (conference abstract). Link
- Snast I, Kaftory R, Lapidoth M, Levi A. Paradoxical hypertrichosis associated with laser and light therapy for hair removal: a systematic review and meta-analysis. Am J Clin Dermatol. 2021;22(5):615-624. PubMed 34057666
- Alajlan A, Shapiro J, Rivers JK, MacDonald N, Wiggin J, Lui H. Paradoxical hypertrichosis after laser epilation. J Am Acad Dermatol. 2005;53(1):85-88. doi:10.1016/j.jaad.2004.06.054
- Teede HJ, Khomami MB, Morman R, et al. Polyendocrine metabolic ovarian syndrome, the new name for polycystic ovary syndrome: a multistep global consensus process. Lancet. 2026;407(10545):2329-2339. Published online May 12, 2026. PubMed 42119588
- myHirsutism. Hirsutism Survey 2019: results from 269 women with hirsutism. Published October 2026. Link
This article is for education and is not medical advice. Talk to a doctor about diagnosis and treatment.