Yea thats kind of why i tried to rank what I thought helped me the most. Honestly it could be one, or all of them - im not really sure i just threw everything in the kitchen sink at it.
I read examine.com a lot when looking up supplements. The sad piece is most supplements do little to nothing - assuming your diet is on point. Two supps I have found with good evidence to support there purported benefits are Vit D & Fish Oil. Vit D I take because I live in the Northeast US, so sunlight this time of year is sparse. Fish oil is supposedly good for skin barrier repair - along with heart/brain health. I eat a tremendous amount of fish but it doesnt hurt popping a pill every morning. Heres the brand i take
https://www.amazon.com/Tobias-Strength-Burpless-Non-GMO-NSF-Certified/dp/B00CAZAU62
https://www.amazon.com/Tobias-Strength-Burpless-Non-GMO-NSF-Certified/dp/B00CAZAU62