The well-known SK-II fairy water has been very popular in the past two years, and the Skin Essence Radiance Ring Diamond White Serum, commonly known as "Little Bulb", has also been selling well in the past two years, and has a good reputation among many serums.
 
The small bulb has the same core formula pitera of the SK-II brand as fairy water, which contains a variety of amino acids, minerals, organic acids, vitamins and other ingredients, which are helpful in regulating the secretion of sebaceous glands, removing aging keratin, and also have anti-inflammatory and soothing effects, so SK-II series products are also known as "oily skin mothers". The main whitening effect of the small bulb is De-Melano P3C, which is niacinamide, which has been proven in clinical practice to reduce pigmentation and inhibit the expression of melanin, and can also be used to treat acne. Hydrolyzed prunes intensify niacinamide's skin tone-improving effect. In addition, small bulbs contain mica and titanium dioxide, which are often added to makeup products to instantly brighten and brighten the skin.
 
This serum is a milky white liquid with good spreadability, not too sticky, and the moisturization is acceptable, so you can use it on oily skin in summer without layering moisturizing products. Like fairy water, small bulbs are more suitable for users with oily skin, while dry skin needs to be used to assist in moisturizing, and sensitive skin is recommended to do a skin test in advance. In terms of design, the design of the bottle is rounded, which is quite similar to the shape of the light bulb, and the reflection of the bottle body is eye-catching under the light. The price of a small bulb is not low, 1040 yuan for 30 ml.
 
The full name of the small silver bottle similar to the appearance of the small bulb is Skin Cause Light Spot Removal Serum, and the core ingredients of the two are the same, and they can be used all over the face. The difference is that small bulbs are suitable for solving problems such as uneven skin tone and early acne scars; The small silver bottle has added anti-inflammatory and antibacterial ingredients, and is more targeted at stubborn pigmentation and acne problems. The small silver bottle essence has a thicker texture, which is suitable for use in autumn and winter, and oily skin will be a little sticky in summer.
 
In 2019, SK-II launched the Radiance Spot Removal Essence Pen, which is the brand's first product that combines skincare products and instruments. In addition to the classic formulas of the Radiance range, pitera and niacinamide, the Spot Pen also adds Smart Cocktail, two major moisturizers, inositol and hexyldecanol, with a higher concentration. The overall composition structure of the light spot pen is similar to that of a small light bulb and a small silver bottle, and its most unique feature is the magnetic application tip, which is claimed to have an absorption rate of up to three times that of finger application. One side of the magnetic pen tip is the magnetic plate and the essence of the mouth, and the other side is the pressure place, aiming at the spot to press out the essence, and then the magnetic plate can be massaged in a circle for about ten seconds, which is very convenient to use. The nib is not powered and does not vibrate, so users don't have to put too much faith in the official claims of absorption.