If you are someone with fair skin, you are probably used to becoming somewhat red after exercise, a hot shower or from anything that causes you to react emotionally such as anger or embarrassment. The redness is caused when the blood vessels close to the surface of your skin dilate due to changes in hormones, which are initiated by those things.
Interestingly, this same reaction occurs in all people with all skin tones, however, it is only visible in people with whiter skin tone.
Many of the conditions that cause redness are temporary and your normal facial color will return after a few minutes or longer if your body got really hot during exercise or a hot shower.
Redness in the face can also happen when you are sick. This is an attempt by the body to dissipate heat by opening up the blood vessels near the skin. Women also can experience redness as they enter menopause and experience hot flashes. Diet also can have a short-term effect on your facial skin tone. Foods that are heavy in MSG, alcohol or anything spicy have been shown to cause your face to flush temporary. 
Finally, some medications that are either prescribed or over-the-counter can cause a temporary flushed look.
However, the cause could be a medical condition that can be treated.
Possible Medical Conditions
Redness in your face is not only an annoying temporary problem, it could be an indication of another medical problem.
Constant redness is most likely caused by a condition known as rosacea. Rosacea is a skin condition where the blood vessels dilate excessively in response to certain triggers such as exposure to the sun, heat, exercise or certain types of foods. There is no cure for rosacea, but it can be managed with medication.
Another cause of redness in the face and cheeks is an autoimmune disease called systemic lupus erythematosus (SLE).
SLE causes a red rash around the nose and cheeks which gives an overall red appearance to the face. However, this is a less common cause and people with SLE tend to have other symptoms such as joint pain, fatigue and swollen lymph nodes. Typically this is diagnosed through a physical examination by a doctor and confirmed by blood tests.
Finally, constant redness could be an indication of a much more serious condition such as cancerous tumors, diabetes, overactive thyroid or a heart condition. However, as with SLE, other symptoms will appear so just because you have a red face sometimes, do not panic. With any of those more serious diseases, there will be more obvious symptoms.
Lotion for Redness
A couple of years ago I came across some tinted lotion that promised to help cover the redness
I looked for it locally at various drug stores after reading about it online, but I could not find it at Walgreens or CVS. Eventually I ordered a bottle of the lotion from Amazon.
My first impression of the bottle was that it was very sturdy with a strong pump on the top. This is not a flimsy plastic bottle with a cheap pump. It has some weight to it.
The lotion itself is slightly green. Why? Well, the color green specifically counter acts the color red. It is one of those color wheel things that is beyond my capability of explaining.
It is also thicker than most other moisturizers or sun block creams. Speaking of which, the lotion also provides a sun protection factor of 15 so it is good for daily use if you are going outdoors.
It was a little odd at first rubbing green lotion on my face, but it will blend in. Keep in mind, it is not really green, just sort of lime green.
I would suggest starting out with just a dab though because a little bit goes a long way. In fact, if you put it on too thick, your skin with have a light green pale complexion. It will appear as if you applied too much foundation or base makeup. The ladies will understand that. And if you are a guy using this, you do not want it to appear like you are using makeup.
After experimenting with it, I found the best way to apply it was to dab a little on my nose and cheeks and rub in lightly in a circular motion after I showered in the morning.
However, it does not do well on facial hair. You want to avoid that altogether. Besides, if you a have a beard, that will cover any temporary redness anyway so stick to the forehead, nose and upper cheeks.
Eucerin claims that the lotion is non-comedogenic but since my acne days have passed, I cannot say if it would cause someone with oily skin a problem or not. I can only say that it did not cause me to have breakouts.
Amazon Price: $14.99 $6.55 Buy Now
(price as of Dec 14, 2015)
So how did it do concealing redness?
It did a good job reducing the appearance of temporary redness but I do not think it would work well for people with constant rosacea. In my opinion, it is a good product to use if you have minor redness around your cheeks and the bridge of your nose after hot shower, saunas or working out. I say minor redness because if you are really red, you have to apply it on thicker which can give you a ghostly, pale appearance and it does not go away until you wipe it off.
I never felt like the product left a greasy or oily feeling though. I used the entire bottle, but I did not reorder a second one.
If you have mild redness, this product will work to reduce it until your skin tone returns to normal. If you are self-conscious about using these types of products during the day, do not be because no one will know you are using a concealer unless you lay it on really thick guys.
However, they do offer basically the same product in a nighttime cream that they say works in harmony with the daytime version. The idea is that the night cream has some other ingredient that used in combination with the daytime cream will not only conceal redness, but reduce its occurrence.
As for me, I bought this and used it for a while, but I did not purchase it again. For me, it came down to cost. I paid around $13 for it plus shipping so it just was not worth it for me. I see now that it is under $10, so if I could get it with free shipping, I would consider purchasing it again. Because each application requires so little lotion, the bottle does last a long time. I believe I used mine for at least a year.
It's a good moisturizer, and the green tint does cover redness temporarily, but it is not a cure all. What was more effective for me was simply not getting hot water on face in the shower.