What shading product do you use?

Do you use a lot of shading products when you do your makeup?

When I watch beauty YouTubers' videos, there seems to be a big difference between shading and not shading, but when you actually use it...

It felt awkward, and I couldn't really feel any significant difference.

I'm using Too Cool for School products, but what contouring products do you all use?

Do you use the same product for nose contouring as you do for your face contouring?

I've heard that there are shading products suited for warm and cool tones. What shading products do people with warm undertones use?

I'm curious.