The unique Vortex-FusionÂ® serum delivery system is what sets the HydraFacial MDÂ® apart from other procedures. The multi-step treatment cleanses, evenly exfoliates and extracts to remove impurities and dead skin cells while at the same time replenishing vital nutrients including Antioxidants, Peptides and Hyaluronic Acid.
3-4 weeks is my standard waiting time for parcels from the UK. China routinely takes 2 weeks, Ireland just 1 week. Always standard airmail, and I live in the Netherlands (next to the UK with only a small strip of water in between, go figure).
IF by air mail from Singapore POST,( you can drop mail at any mail box ) between max 3 working days the  mail  will on board by air left Singapore airport to USA. after all is depend of which Town of USA you are, and also depend of USA state post services , some place may take long time to reach ,because need to transfer by air / land before reach ...