Hyaluronic acid Serum by Juju cosmetics 
US $20.95
Amount 30ml
From http://stores.shop.ebay.com/Alpha-Beauty-Store

With a high concentration of moisture-rich Hyaluronic acid, as advertised, only 2 drops are enough for maintaining an overnight treatment effect comparable to moisturizing mask. The moisture-rich beauty essence efficiently penetrates deep to the skin and gives instant replenishment while at the same time helps remove fine lines and improve your skin texture. The improved skin moisture balance also helps a better application of makeup in next morning.

If you are a skin care addict like me than you’ve probably seen the term Hyaluronic acid being thrown around.   Restylane, a trade name for it, is used in injections to plump up wrinkles. But it is one of the new Star ingredients in a lot of topical skin care. 
As a topical ingredient it’s claimed to help moisturize the skin and improve moisture retention, and help plump wrinkles (through the skin being moist mostly). 
Since moisturizing is one of the 3 most essential components of any skin care routine (the other two being sun protection and cleansing) Hyaluronic acid is very interesting to me.

So why did I go out and buy a Japanese Hyaluronic acid serum when lots of moisturizers from reputable brands have Hyalurnoic acid listed.
Well, quite frankly I don’t trust brand packaging.
...
Really.  
I tried the Loreal; Skin Genesis line. I’m quite fond of L’Oreal, they are generally inexpensive, but of decent quality.
There was no noticeable moisturizing difference. Even after a couple of weeks of using the Serum and Moisturizer.
They were nice...
In my opinion Hyaluronic acid has fallen into the same trap as Retinol (retin, vitamin-a, etc.) It’s a selling feature, but there are no claims as to the amount of the key ingredient in the products.
You can add a miniscule drop of hyalronic acid and call it an ingredient.
So, I went to Juju. I love Juju. Seriously, I’ve used a ton of their products and they are always of really nice quality.
Now, I admit my Japanese skills aren’t very good. I can only roughly translate the label...
But, it’s supposed to be a hyaluronic acid serum, and I believe it.
The Japanese are so much more anal about their skin care.

So, the serum.
It’s clear with a gel like thickness. It goes on like water and absorbs immediately. Like freakishly immediately, as though my skin is a giant sponge baking in the desert. I apply a drop of the serum and it’s gone.
In fact, I have to be careful to spread it out quickly, otherwise it all gets absorbed into where I dabbed it...
Once applied my face feels exactly how it did before applying the serum.
It doesn’t feel moisturized, soft, wet, oily or sticky.
And if I don’t work quickly I can’t even tell where I’ve applied the serum and where I haven’t. 
I then move on and apply my moisturizer. Then I feel moist (well duh), but there’s no real textural difference than if I applied the moisturizer without having applied the Serum first.
So, so far, it seems like a dud right?
*laughs* that’s what I thought too.
But OMG, when I wake up in the morning, my face feels amazing. It’s like I just moisturized. My skin is soft and smooth and almost plumper.
And that softness carries on through most of the day. Even under make-up my skin is better moisturized.
It’s amazing.

The best part of all though is it makes even cheap moisturizers seem like magic. 
This stuff is so worth the money!