Introduction The vermillion lip has unique physical properties and environmental exposures make them prone to dryness and chapping. While lips contribute to facial beauty, perioral aging is highly individual and dependent on ethnicity. Specifically with regard to South Asian population, there is no other literature identified on the biophysical characteristics of the vermillion lip. Methods In this work, characteristics of the vermillion skin in South Asians were examined through various clinical and biophysical characteristics of the lips such as dryness and roughness, fine lip lines, lip texture, hydration, and barrier function. Healthy South Asian females, from age 20–45 were recruited for this study and transepidermal water loss (TEWL), hydration, visual lip tolerance, and visual dryness were measured and graded by the dermatologist-investigator. Results Lip texture and fine lines significantly increased from the 20s to the 40s. Overall lip health significantly decreased with age. TEWL and dryness increased with age while hydration decreased with age, although not significantly so. Discussion This first-of-its kind study on South Asian females establishes that with age there is a decrease in overall lip health and an increase in signs of aging of the lips (fine lines, texture) from the 20s to 40s.

BACKGROUND Social media platforms such as TikTok allows creators to share health information and possible misinformation.2 Our study aims to categorize popular dermatology-related posts and analyze the visibility of board-certified dermatologists on TikTok. OBJECTIVE Our study aims to categorize popular dermatology-related posts and analyze the visibility of board-certified dermatologists on TikTok. METHODS A list of top dermatologic diagnoses and procedures was compiled and the 20 dermatologic conditions and procedures with the highest total views were identified. Profession-specific hashtags were queried.3,4 The top posts under each hashtag were viewed. Users' self-reported occupations were identified, and board certifications were confirmed online when possible. RESULTS Board-certified dermatologists and residents were responsible for 6.49% and 3.03% of top dermatology-related TikTok content, while 71.43% of creators had no formal medical training. Overall, verified board-certified dermatologists and residents created 13.88% and 8.89% of the top dermatology-related posts in the queried hashtags. CONCLUSIONS Most popular dermatology-related content on TikTok is created by individuals without verifiable formal medical training. As social media platforms like TikTok grow, board-certified dermatologists can increase their presence as a credible source for the public to acquire dermatologic knowledge. Verified accounts and visibility of educational credentials can help users discern the source of information being shared on social media platforms such as TikTok.