Normally when you account search for a hair coupon, it will say if you have it unlocked in the hair salon. For example
While buying hair coupons I didn't have yet, I noticed I was getting the "no items found" for one I know that I have, in fact I have both the normal and beardless version.

and yet...
This is actually also happening to these as well, which I own but show as unowned, leading me to believe this is some kind of issue with the coupons that have a beard/beardless version. [item=slate (beardless) hair coupon][item=Mend (beardless) Hair Coupon][item=wen (beardless) Hair Coupon]
I think both places are glitched right now
Looking for these : x100
I'm not sure what you mean by that? Account search and the hair salon are both functioning outside of these specific searches outlined in my report, proven by still being able to search for other coupons I have and getting a correct result - also mentioned in my report.
Do you know if the hair coupons you put in there that show up as owned in the searches were are older than the ones that don't? Curious if it has anything to do with the switch over to the new salon and the ones added since the update aren't being marked correctly?
The coupon I first noticed wasn't showing as owned is which I've had for ages (long before the new hair salon), while one I just bought today, for instance, is correctly showing as owned in the hair salon. I think there's just something wrong with the coupons that have a beardless version, both versions of each are not showing correctly as owned.