Maybe he is worried about your health? But even so, it really isn't his decision what you should do with your body. My husband (then boyfriend) had the same attitude as your husband, he said I should never mess with my face but I didn't listen, I went behind his back as I wanted to look pretty on my wedding day.
I was 33 when I first got botox, I got it done by a highly recommended/trained cosmetic surgeon on Harley Street (so not groupon deal or beautician). The doctor also mentioned to me that she could see the "fat pad" of my cheek dropping as I had lost a lot of weight for my wedding so she advised a tiny amount of filler too. I took her advice and tried it, she inserted only 5cc of juverderm voluma in each cheek, but the second cheek she struggled with the cannula and pressed hard and I felt an electric shock, I told her it was painful and she said that it was normal. I now know it was not normal at all. I was left with horrific constant pain, nerve damage called Post-Traumatic Trigeminal Neuropathy, which I will have for the rest of my life. I had to take a year off work to find medication, and I was suicidal as the pain was unbearable 24/7. Also, my botox started to wear off after only 8 weeks, in most people it wears away quickly so it can be an expensive investment.
Here I am 7 years on, and I still suffer everyday but I have learned to deal with it. The Facial Pain Unit in London helped me imensely. They see the damage that injectables do everyday. I met a girl who went blind in one eye from botox and another, lost her left nostril from skin necrosis after a filler infection. The reason we don't hear about these stories is out of shame, or like me if you sue your doctor for medical negliance, you must sign a non-disclosure agreement to never discuss your story. The industry strives on womens insecurites and secrecies! We don't shout about it when it goes wrong, we suffer in slience as its shameful. Even when I first went to my GP with nerve dmage he said "why would you do that to your face? Silly girl". There is very little sympathy from medical professionals. I carried alot of guilt with me as I was fit and healthy and I made the decision to jeopardize my health for the sake of vanity. I will never ever get over that.
This post isn't to scare anyone but it is a reality check, injectables are never 100% safe, no matter if you got the best doctor in the world. If you do decide to get injectables, please only ever use a board certified dermatologist who is a member of The General Medical Council. Please ensure they are insured, I would not have got the settlement I did for medical neglicance if my doctor did not have insurance. It's your face, get the best professional possible.