Olive oil

I use olive oil as a face moisturizer every night before I sleep. I am using olive oil to heal acne scars.
Believe it or not, I am still using olive oil as a mask. The first time I used olive oil, it was so strange. My sister mocked me about what i did every night.
When I arrived home after six months lived on boarding house, my sister said to me " your acne scars are smaller now ". Wow, olive oil is very useful for someone who has acne on their face.

Olive oil

I use olive oil as a face moisturizer every night before I sleep. I am using olive oil to heal acne scars.
Believe it or not, I am still using olive oil as a mask. When the first time I used olive oil, it was/twas (it happened in the past so 'past simple' :D so strange. My sister mocked me about what I did/have donewas doing every night. (you could alternatively use 'used to mock me' (past participle))
When I arrived (at) home after six months (having) lived on (a) boarding house (I've taken boarding house as (an) entity, eg.: patience, valor, dominance, enmity and so on :))

my sister said to me" your acne scars are more small/smaller right now". (for more impact you can say much smaller)

Wow, olive oil's/ oil isvery useful for someone who has acne on face.

Note: things in brackets are obviously optional :)