I'm a pharmacist who teaches at a community college, but my undergraduate coursework was as an English major. What I hear you saying is that you want your personal statement to stand out and that you wanted to know if person would be a good way of doing it.
First, I'll answer that question: as someone who was on the admissions committee, using third person in the entire work would come across as a person who doesn't have command of the appropriate use of the English language and when to use first person (correct), second person (awkward), third person (wrong), but I'll show you below how you can use it, briefly.
What makes you stand out is writing in the first person about the stories you have from other people. Most essays are about students talking about why they should get in and they all really look the same ... I am good at this, you should accept me because I am so good at this too...what is especially exciting to a bleary-eyed admissions representative is a strong narrative with strong characters, a plot and resolution in an unusual setting. Your first sentence is more important than all of the others put together. Look at the difference between these:
Weak:
My first experience with a pharmacy was at the local drugstore.
I always wanted to be a pharmacist.
I can't wait to help people as a pharmacist.
Strong:
The pharmacist spoke Spanish. The travelers English. I was able to use my knowledge of Spanish and English to help the travelers communicate the symptoms to the pharmacist and the recommendations from the pharmacist to the grandparents. Being able to tell a sick, weak and exhausted six-year old girl that she would be better soon...and so forth.