When replacing a ski helmet, there are a few things to consider. First and foremost, it is recommended to replace your ski helmet if it has been involved in a significant impact or crash, as it might no longer provide adequate protection.Furthermore, if your ski helmet is showing signs of wear and tear, such as cracks, dents, or loose padding, it is advisable to replace it. Helmets are designed to absorb impact and protect your head, so any structural damage can compromise their effectiveness.