What could cause a client to experience burning and soreness under the UV light after nail preparation?

Burning and soreness under the UV light during or after nail preparation can occur due to several factors associated with nail treatment, but overfiling of the nail is the most relevant in this context. When nails are overfiled, it can lead to thinning of the nail plate, exposing more sensitive layers underneath. This can cause discomfort during the curing process of products exposed to UV light, as these sensitive areas may react negatively to the heat generated by the light.

Additionally, overfiling reduces the structural integrity of the nail, making it more susceptible to damage and irritation, especially when combined with the application of products that require UV curing. It's essential to use the correct filing techniques and ensure the nails maintain enough thickness during manicuring to avoid such complications. This understanding highlights the importance of proper nail care practices in preventing discomfort for clients during treatments involving UV light.