Hey,

Not sure where to buy in Penang but you can always buy from Giant or Daiso. Daiso's pretty cheap at RM5 per pack - there's S, M & L in size.

Travel bottles are usually sold in Guardian, Watson's, Giant. Or you could always buy travel bottle shampoos & conditioners and reuse the bottle. That's what i do!

Max per bottle is 100ml/100g. Max per zip bag is 1litre (meaning 10 bottles in total). Usually toothpaste dun count la.

You can't bring your hair dryer on board.

The last I tried doing so (of course I asked the check in counter if I could otherwise I might need to throw it away) was a few years back and they said better to check in.

I forgot which year but I departed from KLIA. If not mistaken, qatar air.

2-3 years ago via qatar air. I was flying to europe.

To clarify, i brought the travel hair dryer (which can be folded).