Other thank chopping off the ends what split end remedies do y'all know? I would cut my hair but my husband prefers it longer (as do I). As it's only mid length right now a cut would be too short.
You can give Olaplex a try.
What exactly is olaplex? Where do you buy it?
Personal Opinion warning: Don't use Olaplex. It's a synthetic protein filler that actually fills the hair shaft with chemical 'Plastic'. Split ends can never be repaired. Once a hair strand splits at the end, the damage will only progress. Left untouched, a split end will continue to split all the way up the hair shaft, damaging the entire strand beyond repair. Split ends no longer have a smooth cuticle covering them, so they naturally catch and snag on each other and on healthy ends. This causes tangles and, you guessed it, more split ends. As you experience more tangles, you will in turn experience more breakage and shedding. This is what people mean when they say split ends keep your hair from growing, they prevent length retention. The split end might look small on its own, but split ends throughout your hair make your ends look frizzy, scraggly, and unhealthy. If you see a couple split ends, it means more are on the way (unless you are only exposing half of your hair to heat, wind, and damage, and we think that’s unlikely.) Split ends are a sign that your hair is damaged, and needs a trim.
So ask yourself, your husband prefers longer hair (as do you), will having split ends help you achieve this?
honestly nothing is going to fix splits but cutting them you can use silicone to make them look better you can try protein but once the end is split its split and if you want it to stop going up the strand even higher then you need to trim those ends, even a quarter and inch to stop the split from getting worse, its hair it will grow and it grows half an inch a month for most of us so unless the splits are way up the hair shaft and its super damaged, trim half an inch and in a month it will be like it never happened your husband i'm sure will not even notice that small an increment