Effects of Ultraviolet Radiation on Human Cutaneous Nerve Fibers

Avoid sun exposure for 7-14 days after microneedling the scalp, using a hat for protection. Sunscreen on the scalp can be messy and irritating.

The user is experiencing irritation from using PG with RU58841 and is seeking alternative solutions like K&B in the UK. They report redness, itchiness, and flaky skin from the current treatment.

Male-pattern baldness might increase UVB exposure on the scalp, potentially affecting vitamin D and skeletal health. The hypothesis is debated, with some seeing it as a minor benefit in specific contexts.

The user is experiencing scalp irritation from using RU58841 with a 70% ethanol and 30% propylene glycol vehicle and is considering switching to a less irritating vehicle, such as 30% ethanol with 70% squalane or emu oil. They are seeking feedback on the effectiveness and irritation levels of these alternative carriers.

The conversation is about whether to use gloves when applying 5% RU58841 to avoid systemic absorption and if washing hands with water is sufficient. Users question the concern, noting it is applied to the scalp.

Apply tretinoin at night and minimize sun exposure. Use sunscreen as a last resort due to its messiness and need for frequent reapplication.