I guess in this context, something like "improvement" or the literal "going up" would also work.
A commemorative day set to this date by relating the way the numbers go up as 1 2 3 to the way one's mood and the condition of one's skin improves as well!
Pretty hard to translate: "agaru" is a word that can take many different meanings such as (but not limited to) things literally "going up" and things "improving".
As for the commemorative day, this is apparently part of a publicity stunt by a cosmetics company.are going uuup!Mokou!
Your clothes are...!!!