You should avoid gel manicures if you have extremely short nails or if your nails are in poor condition (thin, dry or split). You can try strengthening and growing your nails in the meantime by using treatments, such as cuticle oil and moisturiser.You should discontinue use if sensitivity or irritation occurs. This may have occurred due to your nails being in poor condition, Gel Nail Polish getting on your skin, under-curing due to thick layers of Gel Nail Polish, under-curing due to not curing for the full 60 seconds or an allergy to the ingredients.