Things that we do subconsciously

I have been wondering all day today whether I applied shampoo while showering this morning. I woke up in the morning and took a shower before going to the library, I haven't got much memory about the shower - I'd assume that's very normal since that's something we do every day. But while I was drying my hair I felt my hair was a bit different, although I couldn't tell the difference in what way. Later I was in the library and the hair was fully dried, I realized my hair was kind of oily. Eh? I just washed it, I thought. Then I tried to recall, and couldn't remember if I apply shampoo while I showered, or I just wet my hair then started washing my face and body...

Occasionally I intended to take facial wash but I put body shampoo in my hands. Other time I wash my face already but I still take more facial wash. Most of the time I complete my showers without much thinking about the shower itself (but probably a lot thinking on something else).

I'm not trying to say that this is abnormal, or being over-worried. But I'm wondering things like this (my brother gave an example of locking a car), we do them naturally, automatically, subconsciously, without much thought on them, then --- how do we know if we really have done it? So yes I know people check (go back to see if they lock their cars, check if they lock the front door, call mum to ask if they remember to shut the auto gate etc). But how about my case? How do I know if I did wash with shampoo?!! It's going to remain unknown for the rest of my life. HAHAHA (Oh but I do collect evidence and am quite convinced that I didn't use the shampoo 1. I felt my hair was strange when I was drying them 2. its felt oily when it was dried 3. I seem to finish shower quicker than I normally do 4. I normally need a bit of conscious brain use to decide how much shower gel to apply but I don't remember making that "decision" today)

Eh but, if it was done subconsciously (rather than unconsciously), there should be means to recover this subconsciousness?!

Sometimes I'm impressed by myself, having the ability to write such a blog post just base on little thing like that. Ha.