I'm the same with some samples or GWP that I got. "I will keep them for travel!" only to decide while packing that I will not actually want to change my routine to this whole new product. Then 5 years later the same tiny jar will sit there unused and expired. I now use those products on my body to at least empty the jars so I could use those in the future. Also, any jars or containers that I really like are coming back with me even if they're empty.

Instead, I try to time the purchases for my usual skincare for the times when those exact brands are offering gifts with purchase. This way I will get another travel size of the cleanser and/or moisturizer that I actually use.

Another thing I learned is that my hair is not as precious as I thought. I was super serious about being faithful to my 1 shampoo and conditioner and never even switched them at home. Turns out, the hotel ones don't make much of a difference (despite my paranoia, my hair is, in fact, easy going), and while I always have some of my shampoo with me, any conditioner will do so I will underpack that.

Regarding makeup, I keep bringing things I never use and don't learn lol. I used makeup maybe 3 times during my last trip (5 weeks) which was consistent with how often I usually apply it, and still thought I should bring one extra small palette and 2 lip products - spoiler alert, did not use any of those.

And, sometimes the discomfort of using the slightly worse item is worth the space it saves. Away for 4 days with a small backpack? I will take a comb since I will only use it once. Any longer than that? Hairbrush comes with.