Is it better to use whitening products during the day or at night? Are the higher the concentration of whitening ingredients, the more effective they are?

Whitening products are very popular among many people, but there are many things to pay attention to when using these products. Is it better to use whitening products during the day or at night? Are whitening products more effective if the concentration of whitening ingredients is higher?

Speaking of whitening products, many people are using them, but there are many things to pay attention to when using them. It is not good to use them just by using them once. Let’s see whether whitening products are better used during the day or at night? Are whitening products more effective if their whitening ingredients are at a higher concentration?

Is it better to use whitening products during the day or at night?

It depends on the situation. It can be used most of the time during the day and at night.

The main ingredients of whitening products nowadays include vitamin C and its derivatives, arbutin, kojic acid and vitamin B3. In addition, there are some antioxidants such as gentian extract and vitamin E that can inhibit the production of active oxygen in the skin and indirectly achieve the effect of melanin production. These are currently popular whitening ingredients. They are relatively safe and can be used both during the day and at night.

However, fruit acid products that are commonly used to remove dead skin cells are best used at night to avoid irritation caused by ultraviolet rays during the day.

It is important to note that in addition to the whitening ingredients approved by the Ministry of Health and Welfare for use in skin care products, hydroquinone is also a whitening ingredient often prescribed by doctors. It is commonly found in three-in-one spot removal creams, but the ingredients are more irritating and photosensitive. It is a prescription drug and should be used at night under the guidance of a doctor. People should not apply it on their own during the day.

Are whitening products more effective when their whitening ingredients are in higher concentrations?

Although it is said that whitening ingredients cannot play a whitening effect if the concentration is too low, if it exceeds the upper limit, it will be harmful to the skin. After checking the information, I found that for example, ingredients like fruit acid, at a concentration below 3%, only have a moisturizing function; above 3% it has a whitening effect, and above 10% it has the effect of shrinking pores. Many products developed by cosmeceuticals or cosmetic physicians will clearly indicate the concentration of the active ingredients, which is also a responsible attitude towards consumers.

Whitening products can generally be used during the day and at night. The concentration of the whitening product should not be too high, otherwise it will not be effective.