For years, industry experts have bemoaned the fact that while the US Food and Drug Administration has approved 17 category I ingredients, one is exclusive to L'Oreal (ecamsule) and six (PABA, padimate-O, cinoxate, meradimate
, sulisobenzone and trolamine salicylate) are rarely used in formulas for a variety of reasons.
The following six ingredients (PABA, padimate-O, cinoxate, meradimate, sulisobenzone and trolamine salicylate) are rarely used in today's formulations for reasons discussed earlier.
Dioxybenzone(X) Phenyl benzimidazole Homosalate# sulfonic acid (WS)# Meradimate (A)# Sulisobenzone(X) Ecamsule *(1) (A)(WS)# Titanium dioxide (A) Octocrylene# Trolamine salicylate(X)(WS) Octinoxate# Zinc oxide (A)# * 1-Approved in L'Oreal formulations only.
The following combinations with avobenzone are still not allowed: ZnO, TiO2, ensulizole, meradimate
, PABA and padimate-O.
and ensulizole (restrictions when used with avobenzone);
No decision was made on the combination of avobenzone with zinc oxide, titanium dioxide, ensulizole, meradimate
, PABA and padimate O.
It also features UVA/UVB protection with octinoxate, meradimate
, octisalate, oxybenzone and avobenzone.
Two other Benzophenones (Dioxybenzone and Sulisobenzone) are rarely used and Meradimate is a weak UVA (336nm) absorber.
The UV absorbance of most T-T quenchers on the market are at least twice as effective as Octisalate, Homosalate or Meradimate and are comparable to the three Benzophenones.
The name changes are required for four active ingredients: meradimate
for methyl anthranilate, octinoxate for octyl methoxycinnamate, octisalate for octyl salicylate and ensulizole for phenylbenzimidazole sulfonic acid.