preservative
Things that help your cosmetic products not to behave like food: go off even in the fridge in a week or two. They are typically not the most skin friendly ingredients, but a) they are very important and without them you are risking cosmetic product safety, b) they are used in tiny amounts where they are totally safe.
2-Bromo-2-Nitropropane-1,3-Diol
4-Hydroxybenzoic Acid
7-Ethylbicyclooxazolidine
Ammonium Benzoate
Ammonium Silver Zinc Aluminum Silicate
BHA
BHT
Behentrimonium Chloride
Benzalkonium Chloride
Benzethonium Chloride
Benzoic Acid
Benzyl Alcohol
Butyl Benzoate
Butylparaben
Calcium Benzoate
Cetrimonium Bromide
Cetrimonium Chloride
Chlorhexidine
Chlorhexidine Diacetate
Chlorhexidine Digluconate
Chlorhexidine Dihydrochloride
Chloroacetamide
Chlorobutanol
Chlorophene
Chloroxylenol
Chlorphenesin
Citrus Grandis Extract
Climbazole
Cocotrimonium Chloride
DMDM Hydantoin
Dehydroacetic Acid
Diazolidinyl Urea
Dibromohexamidine Isethionate
Dichlorobenzyl Alcohol
Egg Shell Membrane Extract
Ethyl Benzoate
Ethylhexylglycerin
Ethylparaben
Ficus Benghalensis Bark/Bud Extract
Formic Acid
Geogard ECT
Geogard Ultra
Germaben II
Glutaral
Glyceryl Caprylate
Hexamidine
Hexamidine Diisethionate
Hexetidine
Imidazolidinyl Urea
Iodopropynyl Butylcarbamate