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Yes, that's absolutely fine. A lot of online stores practice that, and it doesn't incur any trademark law violations.
Just make sure that:

• you don't violate any agreements with the company whose brand you promote;
• you don’t deceive your website visitors and really offer what they are searching for;
• avoid tricks intended to improve search engine rankings via manipulations with competitors keywords.

Also, it's more preferable not to use the exact branded keywords. Try to use their variations instead (as @wrightandru mentioned).

That's basically it.

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Use this Happily ever after

All the very best.