Hope you have gotten the anti-rabies treatment after the dog bite.
The mark can be reduced to minimum, following the right care under a dermatologist.
However, just topical creams might not help in improving the scar. The pigmentation will reduce but the scar will remain.
Next Steps
Visit a dermatologist and get to know about fractional co2 and microneedling treatment for the same.
Health Tips
Anyone misguiding you saying it will vanish with creams is just trying to make a fool of you. Beware.