I used to use it. But I’ve stopped now. I visited my parents who often use it and couldn’t sleep on the bedding fit the sheer overwhelming fake smells it was awful. I had such an awful headache the next day.
I stopped mainly as I’m cheap and I read about how the build up in washing machines can ruin them.
However after reading more on it I’m glad I did. It coats clothing so can prevent static, creases etc but it builds up on your clothes. There’s some evidence to say it can cause your clothes to be more flammable. They contain chemicals linked to skin irritation, respiratory illness, cancers etc. Absolutely terrible for the environment. Some contain chemicals that are derived from animals so if you’re vegan they may not be vegan friendly.
Its personal though. If you use it on sports clothing you may want to stop as it can actively damage the clothing, sweat wicking properties etc.