Well, if you didn't get the blue one (aka, "the expensive one") you were missing out!
The idea behind each of these machines is very much the same. A little hand held machine with a disposable pad that contains soap exfoliates for you.
First, the machines are different:
• The HSR machine has 2 different speeds, with the high speed being quite vigorous.
• The Wave has only 1 speed, which is very small movements at a high frequency, more like one of those ultrasonic toothbrushes
• The Wave is water-resistant while the HSR is not
• The Wave is quite a bit smaller
The pads are different in texture and the soap embedded within the pad. They are the same size so they fit on both machines:
• The Wave pads are finer, both sides are white with the same texture
• The HSR pads have 2 different sides, 1 side is fine and white though coarser than the Wave pad. The blue side is more coarse and especially when combined with the high level of the HSR machine
• The HSR soap contains small crystals (Alumina) that the Wave does not. These crystals are meant to help with the degree of exfoliation
• The Wave has the addition of Salicylic Acid, a beta hydroxy acid. Note that it's far down on the list, and since it is in a soap (and is therefore washed off), it doesn't stick around to do it's job. So don't buy the Wave pads for the Salicylic Acid – buy them for the texture if that's what you need for your skin type.
• Note that both are too large to fit around your nose very well. I get around this by taking the pad off when I'm done and exfoliating around my nose manually.
Glycerin, Sodium Laureth Sulfate, PEG-8, Cocamidopropyl Betaine, Decyl Glucoside, Alumina, Lauryl Methyl Gluceth-10 Hydroxypropyl dimonium Chloride, Phenoxyethanol, Methylparaben, Propylparaben, Citric Acid, Fragrance -Moonlight RP3418/1 - (Takasago)
Glycerin, Sodium Laureth Sulfate, PEG 8, Cocamidopropyl Betaine, Decyl Glucoside, Lauryl Methyl Gluceth 10 Hydroxypropyl Dimonium Chloride, Phenoxyethanol, Methylparaben, Propylparaben, Citric Acid, Salicylic Acid, Menthol, Fragrance
So, now that you know the differences, why should you get it? Since it has different speeds, the HSR is much more versatile than the Wave is. You can choose to use the high or low speed depending upon how much exfoliation you need that day. Especially if you have both pads, using different levels of texture with different machine speeds can really personalize the experience for you. But, if you want to use it in the shower you need the Wave. I for one am very glad that I have both machines and I hope that this post helps you pick which box you should buy. No matter which choice you make, I strongly recommend that you pick up both types of replacement pads.
Healthy Skin Rejuvenator