Hi there, I am not certain if you have already worked out the clients' problem nail so I am sorry if you already have had some information from another source.
It can have several causes and unfortunately you may be making the nail worse by the contination of the use of the harsh chemicals and the very traumatic process of nail enhancement.
Hands in water for prolonged periods and having a job that causes some trauma to the nails can also be an issue.
Your client may also have an underlying medical condition that should really be checked by her Gp or she may be on medication which is affecting the nail condition.
Un diagnosed type 2 diabetes had caused one of my ladies this condition ,but it was no where near as bad as your lady.
She had no idea about her internal health , as is often the case so we were very careful to really look after her hands.
She has made a full recovery since her type 2 has been under control. Happy lady , and me too!
So a little investigation is needed and personally I would get them down in length and massively reduce the chemical exposure. Could you offer a luxury manicure instead? The skin around the nail is quite dry too , so a hand massage in the treatment may also help to wean her off acrylics.
All the best and I hope you get to the root of the problem, could you keep me posted please?
RosieR