Beyond SPF Numbers: Unpacking Sunscreen Protection Claims
Australia, a nation grappling with high rates of skin cancer, recently faced a significant health controversy. Each year, around 2,000 Australians die from skin cancer and melanoma. Worryingly, almost two out of every three Australians will likely have at least one skin cancer removed in their lifetime. Against this backdrop, a 2025 investigation by consumer group Choice revealed a disturbing truth: 16 of 20 popular sunscreens failed to deliver the Sun Protection Factor (SPF) promised on their labels.
One product, marketed as SPF 50+, reportedly offered only SPF 4 protection in tests. While the brand disputed these findings, it eventually removed the product from sale. This incident led Australia’s Therapeutic Goods Administration to review why test results for the same products vary so widely between laboratories.
The controversy also reached Bangladesh, challenging a common belief that imported skincare products are always more reliable. It highlighted that brand names alone are no longer enough. For consumers, the real value lies in whether a sunscreen delivers the protection it promises. This has become more important as rising temperatures and awareness of harmful ultraviolet (UV) rays encourage daily sunscreen use.
Bangladesh’s hot, humid climate presents unique challenges. Many people avoid sunscreen because it feels greasy, sticky, or leaves a white film. A formula designed for a different climate may not be comfortable for daily use here. A sunscreen that performs well in a lab but stays unused on a shelf protects no one.
So, how can consumers be sure their sunscreen works? First, understand the label. SPF measures protection against UVB rays, which cause sunburn. An SPF 50 sunscreen, when applied correctly, blocks about 98 percent of these rays. But SPF is only part of the story. The PA rating indicates protection against UVA rays, which penetrate deeper, causing tanning, pigmentation, and premature ageing. Both ratings together show how well a sunscreen defends against sun damage.
Second, ask how those numbers were obtained. Not all SPF testing is the same. In-vivo testing involves human volunteers and is considered definitive by regulators in most markets. In-vitro testing uses instruments to measure UV radiation through a product film. It is faster and more affordable but is a laboratory simulation, not a human study.
Recognizing the need for transparency, some local Bangladeshi brands are now seeking external verification. Skin Cafe, for example, submitted its SPF 50 PA+++ sunscreen with Vitamin C for third-party testing at WAFFEN Research Laboratory Limited in Dhaka. This lab is accredited under the international ISO/IEC 17025:2017 standard. The in-vitro test, conducted in July 2024, found the sunscreen had an SPF value of 52.51, consistent with its SPF 50 claim.
Testing products for local conditions, instead of adapting formulas for cooler, drier markets, helps brands bridge the gap between laboratory results and everyday use. The Australian controversy underscores that attractive packaging and high SPF claims are no longer enough. Whether choosing an imported or local sunscreen, consumers should now look for evidence of testing and transparency, and brands must be ready to provide it.
