Stressed out nails

#1
I had a friend in last night getting shellac manicure. Being fairly new to the nail profession would appreciate some advise on her nails. Its her 4th treatment and her nails are in poor condition. She is using her solar oil and I had hoped there would be some improvement by now. She has a stressful job and a habit of picking at her nails and fingers with a result they are very sore looking. She also has quite bumpy nail plates and delamination on very short nails. :?:
 
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