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Drugstore Sunscreens Beat Many Name Brands as Lab Tests Find Wide SPF Shortfalls

Independent laboratory testing using the new ISO 23675:2024 method raises questions about labeling accuracy and trace contaminants in adult sunscreens after testers reported several products fell far below their advertised protection.

Overview

  • Independent tests published in early June found that 11 of 26 adult sunscreens measured by Öko‑Test delivered less than three quarters of their labeled SPF and one product labeled SPF 50 measured under SPF 20.
  • Öko‑Test used the ISO 23675:2024 lab method to measure SPF without testing on human skin, which reproduces sunscreen film on test substrates to estimate UV protection.
  • Testers detected traces of the banned plasticizer DnHexP in several adult products and found one cream with a concentration high enough to earn a failing grade, though reported levels do not indicate an immediate acute health risk.
  • A separate ÖKO‑TEST check of 22 children's sunscreens published June 4 showed strong improvements: none scored worse than 'satisfactory', 13 earned 'very good', and DnHexP was found in only one product at very low levels.
  • Practical comparisons from other outlets picked different winners based on texture and ease of use, so experts advise consumers to check ingredient lists, follow on‑pack application guidance closely, and watch for upcoming regulatory limits and manufacturer reformulations.