Thanks for all the opinions and advice. It does appear that most of you would want to be told.
My mum still makes an effort in her appearance in many ways e.g dresses nicely, jewellery etc.. but when it comes to fine detail she doesn’t notice, which I’m putting down to poor eye sight . She’s very stubborn when it comes to wearing her specs, despite it being a big problem.
So far I have tried subtle hints such as doing my own plucking of facial hair in front of her, but alas it hasn’t worked. Maybe she just doesn’t really care.
Maybe I’m just particularly sensitive to it, as I hate anything that draws attention to me. And as a pp mentioned, I believe there are very few people out there who truly do not care about their appearance.
I think my next move will be to purchase a magnifying mirror to casually leave lying around, and I like the idea of booking a facial treatment. I’ll keep you posted!