I don't know how old she is - around 50 ish? She's ageing normally, I would say, but fast weight loss shows on her face and neck as it would on everyone. None of the beauty items she promotes do a damn thing to permanently tighten the skin. Perhaps they have a temporary effect and they probably smell nice and soften the skin, but that's all. Anyone who says any different is delluding themselves. A haircut would give an improvement to her total look, and an eye lift would benefit her as she has eye bags and eye lift surgery is less invasive than face/neck lift. I had it done quite a few years ago and never regretted it. All in all, though, she's an attractive woman.
Pretty sure she, and Jill Franks, are my age... 60 next birthday.
Genetics and lifestyle probably play a bigger part than what you slap on your skin.
Jill is, or was, a runner. Ali spends lots of her time outside with her horses and dogs.
All the UV light exposure will have played a role in their skin condition.
Jill, to me, has a look of someone who controls her eating to maintain her figure. That could also impact her skin.
Ali has a number of health issues, so medication could also play a part.
Then there are lucky people like Julia Roberts and Debbie Flint who seem to have had excellent skin for years. Debbie's allergic to the sun so has never tanned. Julia does tan, but has largely maintained a youthful skin despite that and medication for her health conditions.
There are claims that you can use fasting to deal with loose skin caused by rapid weight loss, but if you love food, that's a non-starter imo.
If Ali doesn't want to go down a surgical route, I think aall she can really do is keep her face and neck toned and moisturised and try to maintain her weight and not yoyo up and down.