Cosmetic chemistry Flashcards
Solutions
Permanent blend of two or more readily mixed substances
Solute
Substances being dissolved by the solvant
Dilute
Solvent > Solute
Concentrated
Solvent >_ Solute
Saturated
Solute > Solvent
Suspension
Blend of two or more
Immisable substances that separates upon standing
Colloids
Powders- blend of 2 or more immisable substances whereby a substance is finely ground into small particles
Emulsions
2 or more immisable(not readily mixed) substances that create a permanent blend with the aid of a binder, emulsifier, or gum.
Oil in water Emulsion
Water base product (more water) suspended in H20 with small oil particles
Lighter, penetrate, milky lotion, non occlusive.
Water in oil Emulsion
Oil base product ( more oil) suspended in the oil small h20 particles
Lubricants and thickener, slip, creamy, occlusive
5 physical (properties) chemists can tell the differences
- Density
- Specific gravity
- Taste
- Odor
- Color
Chemical (properties) chemists can tell the difference
Combustibility
Ability to support combustibility
Physical change
Changes physical form but not chemistry.
Ex
Freeze water- ice
Heat water- steam
Chemical change
Changes the chemical structure/nature
Acid Base- reaction
Oxidation- reduction
Oxygen creates change
Acidity PH
0-6.5
