Sunscreen-Suntan Products Testing

AAL, Inc. performs complete chemical testing on raw materials and the finished products of sunscreen samples. Sunscreens are chemical actives that act as ultraviolet (UV) A and UV B skin protecting chemical. In the United States, sunscreen products are considered as over-the-counter drugs and must be tested for purity and assay.

The raw material analysis of sunscreen ingredients includes active and excipient chemicals. AAL analyzes these ingredients according to USP monographs.

Identification is done by:

  • FTIR Fingerprint
  • Ultraviolet
  • Visible scans
  • Limit Test
  • Lead
  • Mercury
  • Arsenics

The purity and assay tests can also be completed by gas chromatography (GC) and high performance liquid chromatography (HPLC).

The finished products of over-the-counter sunscreen (i.e. SPF-4 to SPF-30+) active content analysis are performed by HPLC. We have validated testing procedures for sunscreen analysis of active chemicals for up to seven actives. Zinc oxide and titanium dioxide utilize modified FDA United States Pharmacopoeia (USP) methods. All sunscreen testing SPF products are performed in compliance to GMP requirements and results are often released within five to seven working days.


Permitted Sunscreen Active Ingredients (maximum concentrations)
Per FDA Sunscreen Monograph

FDA Max Spec. Method
Aminobenzoic Acid 15% HPLC
Avobenzone 3% HPLC / GC
Cinoxate 3% HPLC / GC
Dioxybenzone 3% HPLC
Homosalate 15% HPLC / GC
Menthyl Anthranilate 5% HPLC / GC
Octocrylene 10% HPLC
Octinoxate (Octyl Methoxycinnamtate) 7.5% HPLC / GC
Octisalate (Octyl Salicylate) 5% HPLC
Oxybenzone 6% HPLC
Padimate O 8% HPLC
Phenyl benzimidazole sulfonic acid 4% HPLC
Sulisobenzone 10% HPLC
Titanium Dioxide 25% USP Titration
Trolamine Salicylate 12% HPLC
Zinc Oxide 25% USP Titration

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