This is the only stuff that prevents my fingers from cracking and splitting, especially during the winter and with all the extra COVID era handwashing I've been doing. It's also great if you're using any harsh exfoliants on your face or body. I use Retin-A and I use this oil beforehand. Absolutely amazing at preventing and healing chapped, flaky skin. I've never experienced any photosensitivity with this or the St. John's Wort tincture, and I sunburn easily--however, I do wear sunscreen like 90% of the time I'm outside, and the other 10% I'm wearing a huge hat as I go to get the mail or take out the garbage.