Concise answer
Hormonal stimulation associated with PCOS can contribute to new or persistent facial and body hair, so more sessions or maintenance may be needed. Laser does not treat the underlying hormonal condition.
Coarse pigmented hairs may still respond, while finer hairs can be less predictable.
Treatment planning should avoid promising a permanent endpoint when ongoing hormonal stimulation is present.
When evaluation may help
Medical assessment is appropriate when hair growth is sudden or accompanied by irregular periods, acne, scalp thinning or other hormonal symptoms.