Following an investigation, the TGA now says a number of other brands have marketed SPF 50 or 50+ products using the same base formula as the Lean Screen, which tested as low as SPF 4. SPF fallout: More brands pull sunscreen from shelves as TGA warns of shared formulaMore sunscreen brands are pulling their products from the shelf, as Australia’s medicines watchdog warns 21 separate sunscreens share a base formula with an ‘SPF 50+’ product that actually tested as low as SPF 4. The TGA says Lean Screen used a base formula devised by third-party manufacturer Wild Child Laboratories, based in Western Australia. Following an investigation, the TGA now says a number of other brands have marketed SPF 50 or 50+ products using the same base formula. Choice, which kick-started the TGA investigations with its bombshell June report, reiterated its call to overhaul sunscreen testing and oversight in Australia.