Sunscreen for implants

I would ask for clarification from your ps but my understanding is that all scars (regardless of the type of reconstruction) need to be protected from the sun for about a year for best cosmetic results. I was even told by one ps that some of the sun's rays can penetrate a bathing suit and if I wanted to be careful it was best to use sunscreen on the scars hidden under my suit for about a year. I am guessing that the warning about protecting yourself from the sun's rays is about protecting scars and not about protecting the implants themselves.