The comparison between azelaic acid and nicotinamide
Azelaic acid and nicotinamide are both commonly used ingredients in the field of skin care, and their effects have their own strengths. In order to clarify the difference between the two, this argument is specially made.

Azelaic acid is mild in nature and has multiple skin care functions. First, it can inhibit tyrosinase activity, block melanin production, and achieve the effect of whitening light spots. If the skin appears due to sun exposure, endocrine, etc., azelaic acid can gradually reduce the color of pigmentation spots and make the skin tone uniform. Second, it can be antibacterial and anti-inflammatory, and has the ability to inhibit Propionibacterium acne. Acne is common, and azelaic acid can relieve inflammation, reduce acne redness and swelling, and prevent acne regeneration. Third, it can improve the keratinization of the hair follicle mouth, make the blocked hair follicle mouth unobstructed, and reduce the formation of acne.

Niacinamide, also has excellent effect. Bearing the brunt of whitening and brightening, it can block the transfer of melanosomes from melanocytes to keratinocytes, achieving whitening effect. Long-term use can make the skin fair and translucent. Furthermore, it can shrink pores, reduce sebaceous gland secretion, reduce sebum overflow, and shrink the appearance of pores. In addition, niacinamide can also strengthen the skin barrier, increase the water content of the stratum corneum, reduce the water loss of the skin, and make the skin soft and healthy.

Compared with the two, in terms of whitening, azelaic acid is generated from the source of melanin, and niacinamide blocks the transport of melanin, which is effective. In acne and anti-inflammatory, azelaic acid has prominent advantages, which can directly antibacterial and anti-inflammatory, and improve keratinization. Niacinamide has a strong barrier and controls oil and shrinks pores.

When choosing, it depends on skin type and needs. For oily and acne muscles, acne occurs frequently. Azelaic acid is optional, taking into account oil control, acne removal, and whitening and light printing. For dry and sensitive skin, it needs a strong barrier, whitening and brightening, and niacinamide is more suitable.