I overplucked my eyebrows when I was younger, and they're hollowed out in the middle. I saw a YouTube video about this product and bought the 15th in store. I like having all the necessary tools in one place in my makeup box, so I bought the kit. The color adheres well to areas without brow hairs, and once it dries, it stays put! I can confidently recommend it to anyone with a stubborn brow. I take just under 1mm of the product onto a spatula from a 100-yen shop and quickly draw the entire brow with the included brush. After drying, I draw in any missing hairs with a pencil or other tool. The brush is synthetic, so it's easy to maintain and doesn't absorb liquid, so there's no waste. ←The beauty advisor highly recommended it as an eyebrow mascara, so in that case, I take an extra 1cm and apply it with a disposable screw brush. It doesn't get frizzy, but it maintains the shape of the brows, and the color is similar to Courreges and goes with any makeup look. If you don't use it as an eyebrow mascara, you only need a small amount, so it's good value for money. I thought it would require some skill, but the touch-up instructions were very thorough and I was able to recreate the look at home in no time. This is a product I'll keep using for the rest of my life.