A client asked me if there is any risk to the lymph nodes when using IPL

There is no problem with IPL treatments reaching the depth of lymph nodes - so it is perfectly safe for your client. The light only penetrates to the depth of the hair that it is treating - in the case of underarms about 4mm. The lymph glands are at least 1cm below. Also the light will only go where there is pigment - no pigment in the glands. Hope this helps.

I developed swollen lymph nodes in my neck after IPL treatment! Very large, very painful