What’s a skin care system without a serum? Everyone has to have a serum! The Somme Institute Serum is the step after Transport, and it is pretty light in feeling. It sinks into your skin immediately and I didn’t notice any residue left behind from it. The serum is a bit hydrating as well, I found it similar to a light moisturizer in hydration level. I had no problems applying makeup over the serum.
The serum has a very high concentration of the MDT5 technology in it, so if you’re going to go for any of the products from Somme, I’d start with this one!