Hi, if you add
DHHB into the formula, it will Can help increase UVA protection, which directly affects the PA value, but the limit is
DHHB is difficult to dissolve, the formula must have a solvent.
DHHB so that
DHHB dissolves and increases the effectiveness of sun protection. melt
DHHB (which means add
DHHB into the formula, there must be soluble in these solutions) up to 39% solubility in
Octocrylene (
DHHB 39% in
Octocrylene 100%) soluble up to 39% in
OMC (
DHHB 39% in
OMC 100%) Up to 36% soluble in
Homosalate (
DHHB 36% in
Homosalate 100%) Up to 30% soluble in
Octisalate (
DHHB 30% in
Octisalate 100%) soluble up to 23% in
LipidSoft (
DHHB 23% in
LipidSoft 100% )