Help! Brown marks on Indian skin after waxing

Hi ladies,

I have been regularly waxing my client for nearly two years every 4-6 weeks and she has full leg, toes, stomach, back, arms, fingers, neck and shoulders all done with warm wax and i do her bikini line and underarms with hot wax.

I did the waxing for her as usual on Friday and she text me to say she had paid me on the Monday through b/transfer so I gathered everything was ok. She then text me today with a picture and it was of her arm - she is indian and has a fairly dark skin...

Help! Brown marks on Indian skin after waxing