The Edit

Smile lines, also known as laugh lines or nasolabial folds, are common facial folds that develop around the nose and mouth due to aging, collagen and elastin loss, repeated facial movement, sun exposure, genetics, and changes in facial volume. While skincare ingredients such as retinol, peptides, hyaluronic acid, antioxidants, and sunscreen can help improve the appearance of fine lines and support healthier-looking skin, deeper smile lines may require professional treatments such as dermal fillers, laser resurfacing, microneedling, or radiofrequency treatments. This guide explains the causes of smile lines, effective skincare options, professional treatments, prevention strategies, and when to consider an evaluation by a qualified healthcare professional.