Rather than a Toner, my advise is to use an Essence. Tatcha has a beautiful Essence. It’s not cheap but it lasts. You get a lot in the bottle. A 10 cent size puddle in the palm, close hands and put it on the face then pat it in. Essence’s make the skin more receptive to the products you put on the skin. Your skin will absorb the products more efficiently. I wouldn’t be without the Tatcha Essence.
I tried SK II and it’s got nothing on the Tatcha. It’s also more expensive for a lot less product.