Researchers tested three different sizes of hyaluronic acid and found that medium-sized HA (around 30.8 kDa) worked best at reducing inflammation and oxidative stress in oxygen-deprived skin conditions. In animal tests, this specific size promoted new blood vessel growth and skin cell regeneration in wounded tissue—suggesting HA's benefits depend heavily on its molecular weight, not just its presence.

Scientists created hyaluronic acid samples in three different sizes using enzymatic breakdown, then tested how each one performed in low-oxygen environments. They studied the results in lab settings and in living tissue to understand which size worked best and why.

Funding not disclosed in abstract