April 2023 in “Journal of Investigative Dermatology”
Urban pollution and sun exposure speed up skin aging and wrinkle formation in Chinese women, with pollution's effects becoming significant after age 45.
Different types of sun exposure can damage skin cells and affect healing, with chronicexposure being more harmful, and certain immune cells help in the repair process.
Different types of skin cells and immune cells play a role in healing UV-damaged skin, with chronicUVexposure causing lasting damage to certain skin cells.
The conversation discusses whether sunlight exposure affects hair growth or loss, with mixed anecdotes and theories but no clear consensus. Some suggest moderate sunlight can benefit hair by providing vitamin D, while others doubt its effectiveness compared to treatments like Minoxidil or finasteride.
Hair loss theory suggests imbalance between Vitamin D Receptor (VDR) and Androgen Receptor (AR) activation. Proposed treatment includes upregulating VDR, downregulating AR, and improving mitochondrial health.
The post discusses concerns about the practicality of using Minoxidil foam for hair loss, including the frequency of application, preparation, coverage area, and drying time. Responses suggest that missing a dose isn't detrimental, it can be applied once a day, it works on all hair areas, and it doesn't need to be perfectly dry before application.
A 113 year old man who has more hair than most people, and the conversation is discussing potential genetic factors that may be responsible for this. Possible treatments such as dermarolling and minoxidil, finasteride, and RU58841 are mentioned.