CND Shellac discolouration help!

[user 80961]

I have a problem that I have never experienced and use all over cnds products in the correct way and order as I have for over 10 uears and am totally stumped... Does anyone know what would have caused these toe nails to discolour within 2 hours of doing them with bare chemise??? She had used a fungal treatment in past week but I've had other clients use this and it's never been a problem.
Photos aren't great as client sent them to me but it gives you the idea

 

[cheekychick]

Probably dye transfer caused by shoes or socks rubbing on the nails. x

 

[Minkeybox]

New shoes or dark socks would be my guess too. Nothing you have done, more like something her feet have rubbed xx

 

[user 80961]

I have redone her nails now but this all happened within 2 hours from completing them. She wore her white dressing gown ND flip flops as she was relaxing before her holiday. Didn't wear socks or shoes. It's totally bizarre

 

[littlekate]

Fake tan?