Before you even open the product check the opening lines on the side of the plastic package. The real one is almost twice as wide as the fake ones.
The real gel has shinning water marks on the top, which are made in detail, and when you glide your hands over them, you can feel the bumps of where the water marks are.
The real gel has many small air bubbles in between the gel. When you shake the bottle you can hear the "texture", the fake ones sounds very different.
On the back under the scanning bar code the number should start with 880, if it does not start with 880, it means that the product was not made in Korea. The first 8 should be bold, also the website on the left should end in .com.
The print in English on the fourth line on the back should be the same as the Korean letters for the first three lines, they should be bold.
There should be made date printed on the back, it should be printed on top of the other writings. There should be 2 Korean letters at the very end of the date. Those two Korean letters should be slightly narrower than the numbers.
After you apply on the hands it should be absorbed by the skin in 10 mins (of course it depends on how much you apply). The real gel looks very clear, it has the clarity of water, and the smell should be a fresh aloe smell. The fake ones smells too strong, and you can clearly smell the alcohol. When you apply the fake one of the skin it takes longer to absorb, after it dries if you wash it the texture is very slimy. The texture of the gel itself is sticky.
In most cases (NOT always, because of shipping reasons) the very first time you open the cap to the gel, you have to take the plastic film off to get to the actual product. But the second time you open the product the plastic film should stick to the cap, and you would have to peal the plastic off the cap.
Also on the plastic film the name NATURE REPUBLIC on it.
Hope this was helpful to all of you.
Thanks for reading.