Concerns before buying Polar H10

Hello everyone,

I'm thinking about switching from my 2yo Xiaomi Watch S1 Active to a Polar H10, because I actually don't really care about sleep, SpO2 and stress data ; as heart rate, steps and calories are the only sensible types of data that are pretty interesting to me considering my current lifestyle (700m walk to univ, indoor cycling almost every day, outdoor cycling once a week if the weather's good, maybe swimming if I have enough time but that's really rare)

However, I have to use twice a day some kind of stretch mark oil where Polar wants me to wear the H10. Would it affect the accuracy of the HR readings ?

Thanks in advance for your replies.