NAC may help support the bodys response to oxidative stress that can accompany seasonal immune challenges in these ways
S3B shows an independent repetition of the experiment, illustrating that the yield varies somewhat

Major Ingredients Water, Propanediol, Glycerin, Dipropylene Glycol, Butylene Glycol, Isopentyldiol, Niacinamide, 1,2-Hexanediol, Hydrolyzed Collagen Extract, Hydrolyzed Collagen, Collagen Extract, Collagen Water, Glutathione, Centaurea Cyanus Flower Extract, Collagen Amino Acids, Soluble Collagen, Lactobacillus/Collagen Ferment Filtrate, Sodium Surfactin, Chondrus Crispus Powder, Polyglycerin-3, Glycereth-25 Pca Isostearate, Adenosine, Ethylhexylglycerin, Borago Officinalis Extract, Chamomilla Recutita (Matricaria) Flower/Leaf Extract, Lavandula Angustifolia (Lavender) Flower Water, Cystoseira Tamariscifolia Extract, Cornus Officinalis Fruit Extract, Anastatica Hierochuntica Extract, Sorghum Bicolor Leaf/Stem Extract, Hyacinthus Orientalis (Hyacinth) Extract, Salvia Sclarea (Clary) Extract, Carbomer, Xanthan Gum, Disodium Edta, Tromethamine, Benzyl Glycol, Glycereth-26, Betaine Ingredients subject to change at manufacturer's discretion

It also improves skins hydration, reduces pigmentation, and minimizes pores for a smoother surface
And I don't buy those stuff because corn is GMO based and GMO product can actually cause, can has a potential of having endocrine disruptors for most of my patients