Yes you can layer Kalme products in fact that is how they are designed to be used.
The skin is able to absorb several products.
All our products are designed to be layered. Modern skin care with less chemicals and preservatives in is no longer about 'one product cures all'.
Rosacea is a very complex skin condition with multiple symptoms and so needs different actions from different ingredients.
Yet you can't load up a single product, especially if its mostly natural, with too many active products as it can become less stable as a result and make it more likely to cause reactions.
Simpler formulations with 1-2 actives in is how we keep our products so natural and so effective and yet suitable for very sensitive skin.