1. Kev faib tawm ntawm lub siab los tiv thaiv kev sib tsoo
2. Txhim kho txoj siv hlua khi kom txhim khu lub cev
3. Tiv thaiv daim tawv nqaij, khoom txhawb plasticity
4. Kev faib tawm ntawm cov rog, txo qhov mob plab phab ntsa
5. Txo cov tawv nqaij thiab tshem tawm wrinkles tom qab yug me nyuam