In order to give it a fair chance, I tried this product for a few days, then for one week I used no moisturizer or makeup etc. at all in the daytime, then I tried this product again (while using nothing else in my daytime skincare routine but my normal face wash and this product).
Unfortunately, both times I tried it, this product dried my skin out, leaving it feeling taut and dehydrated, which could be felt as soon as half an hour after it was applied. During the second trial of this, my skin would actually hurt when I washed it at night, after having had this gel on during the day.
I also think it caused me to have some clogged pores on my forehead, but I can't be sure because those do appear from time to time on me anyway.
I have combination skin with a very oily t-zone, so I am not used to any product making my face feel dry and tight (and I have used 10% benzoyl peroxide nightly for 30 years, and I can keep clay masks on my face for a hour with no ill effects).
Maybe I am sensitive to one of the ingredients of this gel, but the ingredients list is pretty short and "healthy-looking", and it is apparently approved by skincare evaluators like Paula Begoun, who has ranked this gel in her highest (best) category for moisturizers made for oily and combination skin.
If this simply provided no moisturization and behaved in a neutral manner, I would probably have continued using it for the easy and properly-protected dose of antioxidants that it provides, which I find hard to get any other way (since I cannot use most moisturizers or foundations because they clog my pores), but this product actually made my skin worse off than using nothing did, so I will be returning it.

Pros:
properly protected in container
contains antioxidants
no fragrance
easy to apply
absorbs quickly
oil-free
highly rated by Paula Begoun's team

Cons:
very drying on me
not moisturizing on me
somewhat expensive for the amount you get
left my face kind of slick-feeling
possibly caused me some blocked pores

MD hydrating gel is a light weight, oil free moisturizer best suits sensitive/oily skin.

Its main ingredients are hyaluronic acid, water binding agent. With some added anti-oxidants. It's simple and fragrance free.

I have sensitive, dry and irritable skin. Using this alone is not enough to hydrate my skin. I usually mix this with 2 drops of jojoba oil for added moisture. It wears comfortably on the skin, has a slightly acidic smell but not very noticeable.

Overall, this is a decent basic moisturizer that's best for using in conjunction with other more emollient products. Also the lack of cell communicating ceramides need to be supplemented in your skincare regime too. It is quite over priced, you can find cheaper/ quality alternatives such as Hydra B5 gel from Cosmetics Skin Solution or ebay.

I started using this moisturizer as to follow a skintherapist advice. I have dry skin that usually break out severe. After about 2 weeks I started notice my break-out started to be very small and almost hard to notice if you don't stand close to the mirror. I am so very thankful for that decition. But the biggest job the "MD formulation cleaner for oily and very oily skin" sure did!. And I didn't give this one the higest rate because it feels kind'a sticky and unabsorbed a while after application and it cost waaay tooo muuuch!. When that's said I think afte I've used up all MD product on my bathroom shelf, I am really excited to try LUSH-products because I like the thought about using natural products and not chemical products as MD seems to be.

This is a great lightweight hydrator w/antioxidants. I have dryish clog prone skin and have problems finding products that moisturize w/o clogging. This alone is not enough, but I mix it with argan oil for extra moisture and this combo is really nice for me. Doesn't clog or irritate me.I like the minimal ingredients and it's loaded with aox and feels very soothing.
It is pricey for one ounce and I go through it pretty quickly. But it's worth it for me.

Unfortunately something in this product gave me a chemical-like burn, which resulted in tightness, itching and peeling. I figured out it was the Imidazolidinyl Urea which I reacted to in SpectroGel as well.

Don't pass this product by though, (unless you're allergic to Imidazolidinyl Urea lol). It's a nice light hydrating gel and great to use under moisturizer. This caused absolutely no breakouts or flare-ups of my perioral dermatitis which is quite miraculous. I'd still recommend this product as a light hydrating serum. If you live in a dry climate though, you will need to put something on top of this due to the hylauronic acid content or else it will suck all the moisture from your skin.

After using this for 2 weeks, I have to stop, my skin has gotten so dry. It's just not moisturizing enough, pity because it caused zero irritation or breakouts. Will hang on to it though for warmer months. Too expensive to repurchase.

A great lightweight serum that's perfect either for summer or winter (when paired with a more creamy moisturizer). I loved the fact that there are no silicones. The runny consistency reminds me of.. hmm, saliva, so that might bother someone lol. I don't mind A great addition to my beauty regimen, thanks MD Formulations!

This is a great hydrating gel for oily, clog-prone skin like mine! It applies easily and works well under my makeup and it doesn't clog my pores. I also really love that it contains some great antioxidants, which are really making a difference in my overall skin tone. I do have to layer it with a moisturizing sunscreen, so its not quite moisturizing enough on its own for me. I'd definitely recommend it for those with oily or acne prone skin!!

Thank you barbiH! I never would have heard of this product without the recommendations on the skin care board. I have the most finicky, sensitive, clog prone skin ever, and this is the only thing that has worked for me. It provides moisture without being heavy. Upate 6/1: I've been straying from this because it seems to be drying out my skin a bit. Unfortunately, everything else breaks me out so I keep coming back to this.

This is a fantastic moisturizer for acne, break-out prones, sensitive skin types, anyone!
I have dry skin but an oily break-out prone t-zone. Sometimes I use it under my Atopalm cream (tube) if my skin is really dry and irritated and needs a break from strong treatments.