In 2026, whether you should bring your own shampoo depends on your hair type and the "class" of the hotel. Most mid-range and luxury hotels now provide high-quality, branded toiletries (like Le Labo or Malin+Goetz). However, the major industry shift in 2026 is the move away from small plastic bottles toward large-format, wall-mounted dispensers to reduce plastic waste. If you are someone who is sensitive to "communal" products or if you have specific hair needs (such as color-treated or curly hair), you should definitely bring your own. Hotel shampoos are often "all-purpose" and can be quite stripping for certain hair textures. Additionally, at budget or "limited service" hotels, the provided shampoo is often a "2-in-1" formula that lacks proper conditioning agents. If you decide to bring your own, ensure they are in travel-sized containers (<3.4 oz) if you are flying with a carry-on, or simply pack your full-sized favorites if you are driving, as it guarantees you won't have a "bad hair day" while away from home.