Daily oral intake of 40 μg Aloe sterol was shown in a double‐blind clinical trial to significantly increase skin barrier function, moisture and elasticity.
Ultrasonographic results also suggested that the intake of Aloe sterol increases collagen content in the skin.
Read full studies here:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2883372/
and here:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7496846/