Cool!!! Right, the oil cleanser you use at night. Rub the oil over your face, eyes last to remove make up, then splash off, it emulsifies beautifully and will remove makeup, sunscreen etc. Then use the foaming wash, with a sponge, this removes any residue and leaves your skin clean, without disrupting the ph level! This is called double cleansing.
In the morning just use the foaming wash if you want, or just a rub with a konjac sponge, I use a low ph toner as I use oils at night so the residue needs cleaning off.
If you fancy grab yourself a bubble net of ebay, they are only a quid or two. You use this with the foaming cleanser and it turns a small amount of cleanser into a pile of billowing foam, it's fun and it makes the cleanser last for ages. I bounce between my sponge and my bubble net.
Now the serum is just hyaluronic acid, which is a super moisturiser and sinks into the skin and attracts moisture to it, over a thousand times it's size which provides a plumping effect. There is also some research coming out that Hyaluronic acid may have some longer term benefits but it's early days yet, for now use it as a good humectant moisturiser.
The serum is slightly sticky but that disappears as soon as you put your heavier moisturiser on top, or sinks in by itself after a minute or two. the stickiness is the sign of a good hyaluronic acid. Some vegetables, like okra, are sticky because they are high in Hyaluronic acid.