Acidic – an aqueous substance that falls on the low-end of the pH scale, with values ranging from 0-7

Basic – an aqueous substance that falls on the high-end of the pH scale, with values ranging from 7-14

Chemical Sunscreen – includes ingredients that absorb UVA and UBA sun rays in order to protect the skin

Cosmetic – according to the FDA, a cosmetic is any product that is used to alter the appearance of something, this includes colors, shades, brightness, blurring, etc.

Drug – according to the FDA a drug is any product that alters our current biological state, this includes anti-aging, inflammation, strengthing, etc.

Electrons – negatively charged subatomic particle that is most often involved in reactions occurring

Hydrocarbon – an organic compound containing only hydrogen and carbon atoms

Neutral – an aqueous substance that falls in the middle of the pH scale and possesses a value of 7

Physical Sunscreen – includes ingredients that provide a “shield” against UVA and UVB sun rays in order to protect the skin

Organic – may refer to the sourcing of the ingredients of a product or a compound that only contains carbon, hydrogen, oxygen, and nitrogen

Oxidation – a type of reaction that involves the loss of electrons

Reduction – a type of reaction that involves the gain of electrons