If dark spots and post-acne marks are dulling your complexion, this serum tackles them directly: 5% glutathione fades pigmentation whilst 5% niacinamide refines texture and boosts elasticity
Martens, P., Dupont, M., Dauw, J., Nijst, P., Herbots, L., Dendale, P., et al
How Glutathione Reduces Hyperpigmentation Glutathione is a potent antioxidant that successfully reduces hyperpigmentation by blocking melanin formation, decreasing inflammation, and protecting the skin from oxidative stress
Absolute quantitation of intracellular metabolite concentrations by an isotope ratio-based approach
Vitamin B12 is an essential nutrient that supports important functions such as red blood cell production, nerve health, energy metabolism, and overall wellness
Perhaps the closest he comes to this consideration might be his mention of nostril dilation in fearful horses, but he argues that this is the result of an association between fear and the exertions of rapid flight (Darwin, Reference Darwin1872: 130), rather than functioning to detect a source of danger