NIA	Niacinamide
PAMPA	Parallel Artificial Membrane Permeability Assay
ANOVA	One-way analysis of variance
PG	Propylene glycol
DMI	Dimethyl isosorbide
OA	Oleic acid
LA	Linolenic acid
T-BA	t-butyl alcohol
TC	Transcutol® P
CCT	Caprylic/capric triglyceride
PEG	Polyethylene glycol
CIRP	Cosmetic Ingredient Review Panel
SD	Standard deviation
SC	Stratum corneum
NMR	Nuclear magnetic resonance
FTIR	Fourier transform infrared spectroscopy