Age: 26. My eyes look tired. What can I do?

You're only 26 years old, with basically, at least from the photos, very good skin tone and texture, no wrinkles and little in the way premature aging. So, why think first of expensive, invasive, plastic surgery that entails postoperative recovery periods and even the risks of infection and permanent scarring, before considering the simple, regular use of at-home topical agents, such as prescription retinoids, alpha or betahydroxy acids, etc. coupled with in-office superficial peels to freshen and brighten the skin overall and especially around the eyes. You would be wise to look to consult with an experienced, board certified cosmetic dermatologist, rather than looking for trouble with premature cosmetic surgery. Hope this helps and best of luck.

It looks like you might have very slight upper eyelid ptosis(eyelids sitting low)
Because the relationship of the upper eyelid to the pupil is dynamic, it depends on how the pictures taken.
Looking up or looking down, can change the impression, and therefore photos are not always ideal to confirm the diagnosis.
I suggest you consult with an oculoplastic surgeon in your community.
If you can’t find an oculoplastic surgeon, then a facial plastic surgeon or plastic surgeon can do the job as well.
Expect different providers to have different opinions and perhaps recommend different solutions.
Best,
Mats Hagstrom MD