Self-leveling compound in a glazed conservatory on a concrete slab

[Raycan]

I am leveling an uneven concrete slab in a glazed conservatory to then lay tiles.
My question is: Can I use self-leveling compound intended for indoor use? (It can reach below freezing temperatures in the conservatory during winter.)

It says "intended for indoor use" on most products. But what does that mean? Does it mean that it is not frost-resistant or that it cannot withstand weather & wind? What does "indoor use" really mean when it comes to self-leveling compound?

 

[Åsa Lund]

I would rather use products for outdoor use if it can freeze in the conservatory.