It's been a tough time for sunscreens recently. Earlier this year, testing on behalf of consumer organisation Choice found several sunscreens were not delivering the sun protection you'd expect.

One product claimed a sun protection factor (SPF) of 50+, but when tested had an SPF as low as 4.

This triggered a series of events. Some sunscreen manufacturers paused or recalled their products. Other recalls have followed .

Media investigations have alleged issues related to how sunscreens are tested and formulated .

This week, the Therapeutic Goods Administration (TGA) said several sunscreens share a "base formula" made by a single manufacturer. It said preliminary testing had shown some sunscreens made with this base formula may be as low as SPF 4.

It's no wonder consumers a

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