I think yes it uses H4 bulb but have to check the manual (not 100% sure as I have poor knowledge especially in the light section, never replaced in our i10).
Verify the bulb from manual once.
Then go here-
http://www.theautomotiveindia.com/f...ed-headlight-conversion-bulbs-cars-bikes.html
Then go here-
http://www.theautomotiveindia.com/f...ed-headlight-conversion-bulbs-cars-bikes.html
I had shortlisted the below bulb set (chose 4300K / H4) from Aliexpress after going thru the thread shared by bhvm:
https://www.aliexpress.com/item/120...8.html?spm=a2g0s.13010208.99999999.305.Ij0KcX
Stock bulb spec: