Purchased at Nitori in March 2025. This is a set of 4 bottles: 3 liquid type and 1 foam type. I used the liquid types for shampoo, conditioner, and face wash, and the foam type for body soap. As shown in the first photo, I purchased them on March 17th and started using them in April, using them for about six months, from April to September. The eighth photo shows the actual bottles, which are upside down because they were drying. After use, I rinsed them thoroughly with hot water and repeatedly squeezed out the contents (shampoo, etc.), but the scent of shampoo, etc., remains. I have rinsed them repeatedly with hot water since then, but there may be a small amount of water droplets remaining upon arrival. I am not a professional, so it is difficult to completely remove air from inside the bottles. Therefore, please understand the above before purchasing.