We have better news regarding the three magic abilities of vitamin C: there is in-vivo (tested on real people) data showing that SAP does have photo-protective (aka antioxidant) properties , though less than pure AA
Bioavailability: The Lens for Every Decision At the end of the day, the debate over which supplement is "better" is secondary to the question: "Is your body actually absorbing this?" A high dose of a poorly absorbed supplement is less effective than a precise dose of a highly bioavailable one
Some foods high in vitamin B may include: milk cheese eggs liver and kidney meat, such as chicken and red meat fish, such as tuna, mackerel, and salmon shellfish, such as oysters and clams dark green vegetables, such as spinach and kale vegetables, such as beets, avocados, and potatoes whole grains and cereals beans, such as kidney beans, black beans, and chickpeas nuts and seeds fruits, such as citrus, banana, and watermelon soy products, such as soy milk and tempeh blackstrap molasses wheat germ yeast and nutritional yeast Most people get enough B vitamins by eating a balanced diet
Tang D, Kang R (2023) From oxytosis to ferroptosis: 10 years of research on oxidative cell death
see using copper peptides with hyaluronic acid for the full method