At any age that you feel you need to conceal something.
Concealer is sort of priming the face. If you have circles under your eyes or a blemish you put the concealer on them, blend a little and then, apply foundation. I use MAC concealer and a q-tip to smooth it out.
Concealer is way too heavy to put over your whole face. I would say no, don't use it as primer.
concealer
try Maybeline's concealer
Dermablend quick fix is a concealer used for pimples, acne, acne scars and hyperpigmentation. This beauty product helps where a normal concealer does not.
First cover up under eye circles by using a concealer brush or your fingertips to dab concealer under your eyes. Apply the concealers under your eyes and blend the concealer in around the edges. Simply dab the concealer with the tips of your finger or brush in order to blend it. Next, apply the concealer to acne and spots. Dab your concealer onto the top of each mark, and then blend softly outwards to your skin. Use a thin layer of concealer to avoid having a caked-on look. If you have acne, avoid using your fingers to blend the concealer because using your finger can spread bacteria. Lastly, you have to set your concealer. Use a loose or compact powder foundation to set your concealer, so it does not easily wipe off.
using a very little bit, it softens redness
Well, when I usually wear concealer my makeup feels heavy.
Concealer. It's a lot thicker.
Actually primer and concealer are used for two different things. Primer can be for your lips or your eyes or you brows etc. and concealer is used to hide/ coverup blemishes you have. In my personal opinion I think you should use both, because primer makes your makeup last longer and concealer hides unwanted blemishes or scars. Although if you don't have pimples or blackeheads or scars, then just use the primer to make makeup last longer. By the way I think concealer and primer are both very important. Hope this really helped you!! If you have any more questions just ask!!;));;)))
Face concealer is a cosmetic which hides minor imperfections in the skin. It is of benefit in covering spots, differences in skin tone, such as those caused by age spots, and thread veins. After use, either before or after foundation, the skin should appear much more even.
You can use a concealer to hide the contusion. Pat the skin with the contusion with the concealer and gently blend in the concealer with the surrounding skin to hide the bruise.