B.A.
What I would be doing is looking at the capillary refill on the toe or toenail. Press on the toe tip or toe nail it should go white then release it should quickly fill back in. This means that blood flow is good and the tissues are getting oxygen. Then keep an eye on the hairline mark is it slowly raising back to normal skin level or is it staying with no noticed improvement. If either is not improving I'd check in with your doctor or get a second opinion. Also is the child in pain if so I'd suspect that something is either still there or an infection has started. I would be very careful about the use of nair as it can cause skin burns on delicate skin as it works by destroying the protein in a shaft of hair, skin is also a protein. I myself have gotten blisters from nair so use this advice guardedly. Hope all is normal soon.