First off, it really does look like it came straight from the Lab at Jurassic Park.
Second, it lives up to the hype; I've been running 18-20 work days lately and I still look Ashton-Kutcher-fresh
True story; I actually had someone tell me I look like Brad Pitt (Ocean's Eleven days)
This stuff is the real deal; HIGHLY recommend, will buy again

I like how this stuff applies but I am not sure I have noticed a real difference after using for a week.

After using this product for a while I thought it was okay, but not the best. I didn't really notice a difference between days I did or did not use it. I did like how light and non oily it felt on my skin.

Not enough of a sample size for me to judge any long-term benefits, so I'll give this one a solid-three stars. Used this for a few days, and my wife also didn't notice much change, but again, who knows what longer use may bring. Didn't sting, burn or smell weird, so at least that's a plus.

I love Zirh products it really works for me.
smells good feels good. this product is really for men.
I'm planning to buy more Zirh products from Birchbox.

Another winner from Zirh. The "serum" is a gel that goes on easily and doesn't leave much of a film or greasy feeling afterward. After using on my forehead and cheeks for almost two months (I wouldn't use it around eyes), I've certainly noticed a rejuvenation of the skin and reduction in finer lines. Even the ladies notice (beauty/facial therapist included).

The serum seems to work pretty well but it's hard to tell with the small sample size. Leaves your skin feeling good and smells pretty good.

This serum has a nice fragrance to go along with it's light feel. My skin feels very refreshed afterwards, I would definitely recommend this product.

I really like the feel of this product, but its difficult to attest to its efficacy with a sample. The product does not have a fragrance, which is nice for sensitive skin.

So I have to say, I have not really noticed any anti-aging properties in the amount I received. Perhaps it's a longer-term benefit? I am not sure. It' snot a bad moisturizer but definitely can't see a dent in my wrinkles.