【About concealer】——Concealer is not used alone, nor is it meant to completely cover. The effect of concealer depends on personal skin tone, the degree and extent of imperfections, the technique used, and the subsequent makeup effect. Using concealer alone is not the correct approach, and the results will be diminished.

 Choose concealer that matches your skin tone as closely as possible. If the blemish is indeed deep, you can choose a slightly darker shade than your skin color. Concealer should be applied before foundation, using your fingers or a concealer brush to apply it to the blemish area and gently press it. Lightly blend it, but don't necessarily blend it to the point where it's completely invisible. After applying concealer, use foundation to even out the color throughout the face, and then set with dry powder to achieve the real effect. Serious blemishes may not be completely covered, but using concealer is better than not using it.

【About Contouring】

Contour is applied after foundation, applied to areas such as the nose, cheekbones, etc., and then set after the contour is applied.

Highlight and contour by applying to the areas that need to be illuminated.

【Usage Introduction】
Steps:Cleansing → Toner → Emulsion → Concealer → Foundation or BB Cream → Setting
Color: The actual color must be selected based on skin tone.
1. Highlight illumination color: Highlight or fair skin tone.
2. Concealer: Choose based on skin tone.
3、Contouring

4、Even skin tone: orange, yellow, green. 
Yellow Concealer #GC991: Tone for Tea-colored Dark Circles:
GC990 Orange Concealer: Dark circles and blue-black under-eyes:
Green Concealer #GC992 is suitable for: acne scars, redness, blood vessels, and pimples.
If you have dark circles under your eyes, first use a slightly orange-colored concealer to create a base, and then use a skin-tone concealer to cover it.
For reference only. Choose at your discretion! 
Dark circles under the eyes are usually blue, tea, or black.
Dark circles are mainly concealed with yellow or orange concealer. Makeup artists recommend using yellow-based concealer for brownish dark circles, and orange-based concealer for black or blue-green dark circles. Then, use concealer that matches your skin tone or foundation color to cover again.
Dark Circle ConcealerThe under-eye area usually has three colors: blue, tea, or black. The under-eye area is mainly covered with yellow or orange concealer.
Tea-colored eyesUse yellow colors.
Black and blue eyesUse orange-toned concealer, and then apply concealer that matches your own skin tone or foundation color to cover it again.
Orange concealerFor dealing with black and blue dark circles, you can choose a tan-toned concealer.
Apply concealer to the under-eye area, and gently push it out to the edges with your ring finger. Then, use a skin-tone concealer or foundation to cover the orange under-eye area in the same way. After that, use a sponge to evenly apply the daily foundation all over the face, but don't push it on the under-eye area; instead, use a gentle pressing motion to blend it in. When covering the under-eyes, don't forget the inner and outer corners, as these areas are where dark circles are most pronounced and often overlooked. (The method for covering the under-eyes with yellow concealer is the same as for orange.)
Green ConcealerConcealer with different colors is used to adjust skin tone. Green concealer can cover red skin on your face, such as scars or acne. Green concealer works better for covering pimples and red veins.
Yellow ConcealerYellow concealer can not only cover dark circles but also adjust the overall skin tone, so it's suitable for applying to areas where you need to adjust your skin tone. Yellow concealer is universal and suitable for girls with basic daily concealing needs.