The body's daily sulphur budget is supplied, mostly, by the amino acid content of the day's protein

Other ingredients Water, centella asiatica extract (22.7%), glycerin, cetyl ethylhexanoate, butylene glycol, polyglyceryl-3 methylglucose distearate, niacinamide (20,000ppm), stearic acid, sodium polyacryloyldimethyl taurate, silica, sodium hyaluronate, glyceryl stearate, beeswax, butyrospermum parkii (shea) butter, macadamia ternifolia seed oil, hydrogenated polydecene, betaine, glutathione (1,000ppm), trehalose, adenosine, citric acid, trideceth-10, disodium edta, sodium citrate, caprylic/capric triglyceride, hydrogenated lecithin, cholesterol, xanthan gum, nelumbo nucifera extract, artemisia annua extract, oryza sativa (rice) extract, saccharomyces ferment, solanum melongena (eggplant) fruit extract, melaleuca alternifolia (tea tree) leaf extract, hydrolyzed collagen, squalane, beta-glucan, dipropylene glycol, hippophae rhamnoides fruit extract, madecassic acid, asiaticoside, asiatic acid, propanediol, hydroxyacetophenone, 1,2-hexanediol, ethylhexylglycerin, dipotassium glycyrrhizate

I am no expert on any of this but read this forum every day
doi: 10.15288/jsa.1999.60.103
Brassica vegetables High in vitamins C and K, fiber, and beta-carotene, crunchy brassica vegetables (also known as cruciferous vegetables) are spiked with sulforaphane, a sulfur-rich compound, that studies have shown can increase glutathione and glutathione-related enzymes (2)