Papilla - The small area at the base of the root that provides nutrients for the hair.
Paraben - Common preservative used in many cosmetic products that can be extremely damaging to the hair and scalp.
Patch Test - A patch test is performed prior to a chemical service to check for any adverse allergic reactions to the chemical.
Pigment - Refers to the hair’s color.
Porosity - the hair’s natural ability to absorb moisture, divided into three levels: low, normal, or high
Low Porosity - Refers to tighter-closed cuticles, making it difficult for moisture to be absorbed and retained.
Normal Porosity - Refers to cuticles that aren’t closed tight, but not open too wide. Hair with normal porosity easily absorbs moisture, thus, retaining moisture for longer periods of time.
High Porosity - Refers to cuticles that are opened wide, usually due to gaps and holes in the cuticle allowing too much moisture to be absorbed, leaving it prone to frizz and tangles.