Eflornithine With Laser for Facial Hair: What Two Trials Found

If a clinic proposes eflornithine alongside laser treatment for facial hair, ask which benefit it expects: a faster early response, a better result at the end of treatment, or longer-lasting reduction. Those are different claims. The Endocrine Society’s¹ 2018 guideline for premenopausal women with hirsutism suggests adding the cream when a faster response to photoepilation is desired.¹

The 34-week trial: assessments differed

In a 2006 randomized study², women applied eflornithine to one side of the face and the cream’s inactive vehicle to the other for 34 weeks. Both sides received Nd:YAG or alexandrite laser at weeks two and ten. Fifty-four women completed the trial. Comparing sides within each person helped assess what the cream added to laser.²

The published abstract reports that blinded assessments favored the eflornithine side from weeks six through 22, but found no significant difference by week 34. Participants’ own grading continued to favor that side through week 34. These were different assessments, so the later patient ratings should not be substituted for the blinded result. The abstract supports an early benefit; it does not establish permanent removal after treatment ends.²

The six-month trial: an upper-lip comparison

A 2007 single-center study³ enrolled 33 women; 31 completed it. The entire upper lip received long-pulsed alexandrite laser every four weeks for up to six sessions. One side also received eflornithine, the other placebo cream, in a randomized, double-blind comparison.³

At the end, investigators rated 29 of 31 eflornithine-plus-laser sides as completely or almost completely cleared, compared with 21 of 31 placebo-plus-laser sides. Hair counts and patient assessments also favored the combination. One participant withdrew after developing hyperpigmentation following the second laser treatment. The study did not establish whether the difference lasted beyond six months.³

These counts describe treated sides of the upper lip during a small trial. They are not a forecast for your whole face or a guarantee that maintenance treatment will be unnecessary.

Suitability comes before speed

The Endocrine Society¹ identified methodological weaknesses in both trials, including no intention-to-treat analysis, which would account for everyone assigned to treatment. It also noted unclear allocation concealment in one trial. That limits confidence in the size of the added benefit.¹

Its guidance distinguishes hair color and skin-related risks: it suggests photoepilation for auburn, brown or black hair, and electrolysis for white or blonde hair. For women of color choosing photoepilation, it suggests a long-wavelength, long-pulse source with appropriate cooling. It also warns of increased hair growth after photoepilation in Mediterranean and Middle Eastern women with facial hirsutism. Discuss your own suitability before paying for a combined course.¹

Put the cream and laser on one written plan

Eflornithine slows growth; it does not dissolve existing hairs. The UK Vaniqa leaflet says other hair removal may still be needed, improvement can take eight weeks, and original growth may return within eight weeks of stopping. It advises contacting the doctor if there is no improvement after four months.⁴

The same leaflet warns about stinging or burning on cut or irritated skin and says not to use Vaniqa during pregnancy or breastfeeding, with another method advised when trying to conceive. Confirm the instructions and local availability for the exact product with your prescriber or pharmacist.⁴

Before treatment, ask:

• Which outcome should improve, and when will you compare it with my starting photographs or notes?
• What laser and treatment area are planned, and how do my skin and hair affect the choice?
• How should I coordinate cream use, hair removal and laser appointments, including what to do if skin becomes irritated?
• What would continuing treatment cost, and what is the plan if the extra benefit is too small for me?

Hair, Everywhere discusses eflornithine and its combination with laser in Chapter 7, “The Chin Hair Report.” The book can help prepare that discussion; your treating team should set the prescription and procedure plan.