HiYa. So some background context. I work in a very very large organisation where we have a zero policy on this type of stuff, and one of my additional roles is to act as an independent investigator for HR on such cases. Before anyone starts unpicking my comments, let me say I am trying to provide scenarios that are not directly related to you, as we don't have the full context.
Depending on the circumstances, based on my experience this doesn't cross the threshold for sexual harassment as his comment would be very difficult to prove as he was technically correct. You cant do something about how he said it, but possibly dignity at work, behaviours etc... and if upheld, would probably warrant some form of warning/ advice.
Its often standard process that the complainant doesn't know the outcome of an investigation. Why? I have no idea. Therefore you don't know that they didn't do anything.
I just dealt with a very similar case but this employee also has other cosmetic surgery. However, how it made you feel shouldn't be discounted.
The next are merely comments that an investigator would have to take into consideration.
HR processes can be tackled informally or formally. We now work in a time where everyone seems to report everyone even for the smallest of things. As an investigator, you ask for any witnesses who may have overheard it, was there a history of the employee saying similar things to other employees etc....
I had a similar case. The employee had fillers and a breast augmentation. During the investigation we discovered that outside of work, she also had an only fans page - something which contravenes our policy (disrepute etc..) and also had a bit of a 'reputation'. On top of that, despite the female raising the complaint, I also discovered that she would say "You only get fillers for one reason, and that's to give a good b* job**". Which basically destroyed her argument.
Therefore whilst we found the male employee with a case to answer, he was given advice, and HR took action against the female as other information came out during the investigation, such as having onlyfans and action was taken against her.
All I am saying here is that (a) we dont know the full context (b) We dont know the workplace culture etc... so on the surface it may look like nothing was done but you dont know that.
This is all for wider understanding of HR type investigations.