Laser Hair Removal - dark spots underarms. (photos)

Thank you for your question. It appears that the axilla areas that have been laser treated may have absorbed a higher energy level. This may be due to UV light exposure prior or immediately after the laser treatment, spray tan exposure prior to the laser treatment, or a higher energy setting on the laser treatment.
These markings generally self resolve over time.
I would recommend that you consider applying some topical Vitamin E ointment to the affected area to help facilitate a more expedient recovery.
Please advise your laser therapist of the outcome so that that an appropriate adjustment to the laser setting can be made for future treatments.
Best wishes.