Ingredient: Allantoin
Source/Use: Found in cows and other mammals and used as a healing agent in many cosmetic creams and lotions
Alternative: Allantoin is also found in many plants, particularly the extract of comfrey root.
Ingredient: Beeswax
Source/Use: Wax from virgin bees is used as a sealant in lipsticks, mascaras, eye creams, lip balms and nail whiteners
Alternative: Paraffin, vegetable oils and fats.
Ingredient: Boar bristles
Source/Use: Hair from boars commonly used in makeup brushes and toothbrushes
Alternative: Nylon or vegetable fibers.
Ingredient: Biotin
Source/Use: Found in all living cells and used in cosmetics and shampoos
Alternative: Plant sources.
Ingredient: Stearyl alcohol or sterols
Source/Use: A mixture of solid alcohols that may sometimes be prepared from sperm whale oil and is used in skin creams, hair rinses and some shampoos
Alternative: Vegetable stearic acid
Ingredient: Fish liver oil
Source/Use: A source of vitamin A sometimes used in cosmetics and hair dyes
Alternative: Vitamin A derivatives from carotene (carrots) or synthetic sources
Ingredient: Mink oil
Source/Use: An emollient used for its moisturizing properties in cosmetics and skin creams
Alternative: Vegetable/natural oils such as avocado, almond and jojoba
Ingredient: Silk/silk powder
Source/Use: The tiny fibers made by silk worms to form a cocoon — used as a coloring ingredient ion face powders and soaps
Alternative: Milkweed seed-pod fibers or synthetic silks
Ingredient: RNA (Ribonucleic Acid)
Source/Use: Slaughterhouse waste that is commonly used in many protein-enriched shampoos and conditioners
Alternative: Plant cells
Ingredient: Sponge (luna and sea)
Source/Use: A sea animal that looks like a plant and is used as an ingredient for sponges and loofahs
Alternative: synthetic sponges
Ingredient: Stearic acid
Source/Use: Fat extracted from cows, sheep and pigs and used as a lubricant in deodorant, hair spray, shampoo and soap
Alternative: Vegetable fats or coconut
source: http://www.rominachirre.com/romina_chirre_english/rominas_blog/?cat=5&paged=3