As a heatwave approaches, experts say US sunscreens are less effective than those abroad

Other countries have approved a wider range of UV-filtering ingredients, which allow for more advanced sunscreens

Many dermatologists and experts say US sunscreens are still not as effective as many available overseas when it comes to protecting against ultraviolet radiation linked to skin cancer and premature ageing - despite years of research.

The concern comes as a brutal heatwave, with a suffocating heat dome", is arriving for more than 200 million people across vast swaths of the US this weekend, bringing extreme heat and humidity . Studies have shown that the global climate crisis is making heatwaves more severe, frequent and long lasting.