Is not "invisible " , thick to apply , difficult to wash off and very drying on my skin , will definelty not buy this product again !!

Protection: If you are very serious about health and sun protection, then this is possibly the safest, most effective sunscreen you can find. There is a good reason why Invisible Zinc use zinc oxide as the sole active sunscreen agent in their products. Studies have shown that some organic compounds commonly used in sunscreens (namely, oxybenzone, benzophenone, octocrylene and octylmethoxycinnamate) can react under sunlight and form free radicals, which can damage DNA and potentially cause cancer. Zinc oxide and titanium dioxide, on the other hand, are inorganic compounds and are very stable. However, titanium dioxide is inferior to zinc oxide only because it doesn't provide good protection in the UVA spectrum. Zinc oxide provides broad spectrum UVA/UVB protection. And that is why zinc oxide is such a suitable active ingredient for use in sunscreens. For those who are unaware, 30+ is the highest SPF rating allowed in Australia.
Texture and application: It takes a bit of work to blend, leaves a white cast and proves difficult to remove. But again, if you are very concerned about proper sun protection, then you may be able to overlook this since a good sunscreen needs to be dense in order to provide full protection. A good sunscreen should also last on the skin and not rub off immediately. Although you can certainly use this on the face, most people would find this too thick. If that is your concern, there are other products in the range specifically formulated for the face which feel more comfortable on the face. I personally don't use this on my face unless I know I will be exposed to the sun for a prolonged period of time and require the best protection I can get. For daily use on the face, I am looking at powder sunscreens (i.e. Peter Thomas Roth Mineral Instant SPF) since traditional sunscreens such as this one have greasy bases.
Overall, this is a heavy duty sunscreen that offers very good sun protection. Probably too heavy for most people on a daily basis but a good one to have for extended outdoor activities.

When you try to apply this product, it feels really slippery and is very hard to rub in. The protection factor is OK, but you can get that with the non-zinc varieties with much less effort. The other major problem I found with this product, particularly when using it on the face, is the fact that it is extremely hard to wash off. I used an exfoliating cream because I had some difficulty previously getting the zinc off my face. Despite this, I still had traces of makeup and zinc left on my face. I just don't think its worth the effort really.

The name "Invisible" is a mis-nomer because it leaves a sticky white caste on my skin (I am very fair). It "melts" into a liquid sticky thick oily mess when you get into the hot skin, even when I thought I had rubbed it well in before.
No-one I know likes the strong sickly baby powder fragrance. None of my friends will let me make a gift it to them, the just say it stinks and wrinkle their nose - and they are the ones that usually have their hands out for any beauty product going! Men especially express strong disgust at it.

HIGHLY COMEDOGENIC. I got masses of itching hard clogged pores, bumps and some pimples. On my face, on my chest, neck and arms, even behind my ears and inside my elbows! The worse was a rough patch of 50 or so behind each ear. I have never experienced anything this bad in all the creams I have ever used on my skin in my entire life.

The last note I want to say is its impossible to completely wash this stuff off. After a day using this face and body, I used tons of soap and cleanser, then exfoliated all over face and body, and STILL i could see white dots of clogged sunblock sitting in my skin and a white caste all over. Probably that is why I got all those comedones (like a raised blackhead that looks white as it hasn't had time to oxidise). They probably know its hard to remove too, as they try to sell you a companion heavy-duty cleanser to remove the stuff. No other sunblock I've ever heard of needs that. Would not recommend.

CIBA gives this a PPD of 9.1. It does leave a white cast, and is quite thick. However, the formulation is quite malleable so you can rub this in and it will diminish the white cast so you can wear it day to day. Also, for such a high percentage of zinc (18%) it is quite moisturizing and I have dry skin (for example, my skin CANNOT stand Dermalogica Super Sensitive spf 30- think sahara). I would buy it again.
UPDATE: They have reformulated this and it is officially my HG sunscreen! Its much creamier and easier to apply. Smells like a lovely baby cream. Continuous use of this has also evened out my skin tone. It's also great for my eye area, chemical sunscreens make me feel baggy- not with this though! Awesome for my dry skin, too. LOVE LOVE LOVE!

No I'm not happy with this at all. I wore this everyday for 6 days whilst on holidays and returned covered in freckles and even got burnt one day! The protection factor is very questionable. Also, this is extremely thick, too thick to use on your body. It takes too much work to rub it in which feels damaging to my skin from pulling etc. It leaves a very noticeable white cast. This clogs my pores like a mofo and seems to dry my skin out somewhat. It may be chemical free and non nano, but no its not a good option at all.

I love invisible zinc. It protects me and it's natural. When i use normal sunscreen i get rashes and dots.
Not with this. it also lasts awhile. It does take a while to absorb and a bit expensive but it protects my skin from the sun!

Even though this is meant to be non-opaque, it still leaves a slightly pale cast to my face and makes me look like I'm wearing heavy makeup. I only use this on my face as it's too thick for body application.
This applies quite thickly initially but blends out a bit better although you really do have to spread it a bit. Once it dries, it is less greasy than some other sunscreens on the market although still greasy. This feels thick on my skin and I'm aware of it sitting on my face like a thick second layer, but it's also for this reason that I know that it's protecting me. Unfortunately, due to its thickness, it also makes me break out, and when I wash it off, my regular cleanser just doesn't cut it - I have to exfoliate to make sure it comes off properly. This melts on my face during warm weather despite powdering. The price is quite good for the quality, but it's just too thick and heavy. A similar product for a better price is Natural Instinct's SPF30+ mineral sunscreen, which I also think is less thick.