The black lines on your nails could be due to several reasons, including trauma, nail disorders, or reactions to cosmetic products like power polish. Furrows or nail changes may also indicate underlying conditions that require evaluation.
Next Steps
I recommend consulting a dermatologist to assess your nails thoroughly. A detailed evaluation will help identify whether the changes are due to cosmetic product use, nutritional deficiencies, or other factors, and guide appropriate management. You can book an online consultation with me for further advice.
Health Tips
Avoid using nail cosmetics or polishes temporarily to let your nails recover. Keep your nails clean, hydrated, and trimmed. Do not attempt self-treatment without proper medical advice