What's in it? Vitamin C formulations

When applied topically, pure vitamin C (L-ascorbic acid) has been shown to have positive effects on the skin's appearance with continued usage. Treatments may help to reduce the appearance of fine lines and wrinkles, minimize pore size and improve skin's texture and firmness.

Cosmetic ingredients as listed by their makers:

Kiehl's Since 1851
Powerful-strength Line-reducing Concentrate
Formulated with 10.5 percent pure Vitamin C

Ingredients: Propylene glycol, cyclopentasioxane, ascorbic acid, glycerin, cetyl PEG/PPG-10/1 dimethicone, dimethicone crosspolymer, lauroyl lysine, acrylates copolymer, adenosine. Fmla 685275/21. Code F.I.L. D39705/1.

Murad Environmental Shield Essential-C Daily Renewal Complex
What it does: Treats and targets pigmentation and damage caused by environmental exposoure (reducing appearance of fine lines by 17 percent after one application; reduces photodamage by 46 percent in four weeks:
Ingredients: Cyclomethicone, ascorbic acid, dimethicone crosspolymer, C12-15 alkyl ethylhexanoate, Di-C12-15 alkyl fumarate, tocopheryl acetate, retinol, bisabolol, allantoin, lysine lauroyl, methionate, Rice amino acids, Zinc aspartate, chitosan ascorbate, retinyl palmitate, cyanocobalamin, Beta carotene, Ranunculus ficaria extract, glycine, glutamic acid, caprylic/capric trigylceride, vegetable oil (olus), limonene, Carthamus tinctorius (safflower) seed oil, Citrus aurantium dulcis (orange) oil, Citrus nobilis (mandarin orange) peel oil, Ocimum basilicum (basil) oil, Citrus grandis (grapefruit) peel oil), Ferula galbaniflua (galbanum) rein oil. U.S. patents 5,972,999/6 194,452.

Ole Henriksen Sheer Transformation
Ingredients: Water, caprylic/capric trigylceride, dimethicone, stearyl alcohol, tribehenin, glycerin, tocopheryl acetate, calcium ascorbate, ascorbyl palmitate, Pisum sativum (pea) extract, Chamomilla recutita (matricaria) flower extract, Glycyrrhiza glabra (licorice) root extract, Santalum album (sandalwood) wood extract, Helianthus annuus (sunflower) seed extract, Vaccinium myrtillus fruit/leaf extract, Saccharum officinarum (sugar cane) extract, Acer saccharum (sugar maple) extract, Citrus limon (lemon) fruit extract, Berberis Vulgaris bark extract, Fusanus spicatus wood oil, superoxide dismutase, sucrose dilaurate, sorbitol, hydrogenated coco-gylcerides, octyldodecanol, polysorbate 20, dimethyl sulfone, xanthan gum, phenoxyethanol, caprylyl glycol, ethylhexylglycerin, hexylene glycol.