Sebamed SPF 50 Sunscreen Protection Is So Low It Caused Sun Burns

We bought Sebamed SPF 50 sunscreen thinking it would be good, but it actually caused a bad burn on my husband's skin! Because of this product, our vacation had to end early. It's really annoying that we spent a lot of money on a product, expecting it to be good, but it ended up causing a lot of trouble. I'm really concerned about how this product is affecting people's health, and I want to file a complaint against the brand. Because the harm caused by this product is really bad for people's well-being, I think we should stop making it and find ways to help the people who have been affected by using it. I want the brand to own up to what happened and do what's needed to make sure it doesn't happen again.