Is using br tag in product titles harmful for SEO?

Hey guys

Would love to split my product title over 2 or 3 lines but can’t get it done. I noticed that when I use the
tag it does work.

Is using the br tag in the product title harmful for SEO? I am an amateur and completely clueless about these things.

Thank you

It is not recommended to use html in product title
Why you want to use product title in 3 lines ?
Is there specific reason for that ?

Your product title shouldn’t contain HTML code. Its role is more than just presentation on the product page: the title is used across countless places, like confirmation emails to customers, providing data to search engines, listing the products on the Shopify admin etc. Therefore it should strictly be plain text.

What I would recommend, if you wanted to adjust the presentation on the product page, is to use metafields to capture the different parts that make up your product title, then update your product page template to use these values when outputting the product title. That way you can fully customize the HTML markup to your liking while keeping the real product title intact.