Niacinamide in Haircare

What is Niacinamide?

Niacinamide, also known as nicotinamide, is a water-soluble vitamin B3. It is an essential nutrient that plays a crucial role in various cellular functions throughout the body, including energy metabolism and DNA repair. Unlike its chemically similar counterpart, niacin (nicotinic acid), niacinamide does not typically cause the "niacin flush," a temporary redness and warmth of the skin.

In haircare, niacinamide is valued for its ability to support a healthy scalp environment and contribute to the overall appearance of hair.

Mechanisms of Action

Niacinamide exerts its beneficial effects through several key mechanisms:

• Anti-inflammatory Properties: Niacinamide can help reduce inflammation on the scalp, which is often associated with conditions like dandruff, seborrheic dermatitis, and general irritation. By calming inflammation, it can create a more favorable environment for hair growth and reduce discomfort.
• Antioxidant Activity: As an antioxidant, niacinamide helps neutralize free radicals, which are unstable molecules that can damage cells, including those in the hair follicles and scalp. This protection can help mitigate oxidative stress, a factor implicated in premature hair aging and hair loss.
• Barrier Function Support: Niacinamide contributes to the synthesis of ceramides and other lipids in the stratum corneum, the outermost layer of the skin. A healthy skin barrier is crucial for retaining moisture and protecting against environmental aggressors. On the scalp, a robust barrier can help prevent dryness, irritation, and transepidermal water loss (TEWL), which is the passive evaporation of water from the skin.
• Improved Blood Circulation (Indirect): While not a direct vasodilator like niacin, niacinamide can indirectly support microcirculation by reducing oxidative stress and inflammation, which can otherwise impede healthy blood flow. Efficient blood flow ensures that hair follicles receive adequate nutrients and oxygen for optimal function.
• Regulation of Sebum Production: Some research suggests that niacinamide may help regulate sebum production. Excess sebum can contribute to an oily scalp, clogged follicles, and certain scalp conditions. By helping to balance sebum levels, niacinamide can promote a healthier scalp environment.

Benefits for Scalp and Hair

Due to its multifaceted mechanisms, niacinamide offers several benefits:

• Reduced Scalp Irritation and Redness: Its anti-inflammatory properties make it effective in soothing an irritated scalp, reducing redness and discomfort.
• Improved Scalp Hydration: By strengthening the skin barrier, niacinamide helps the scalp retain moisture, leading to reduced dryness and flakiness.
• Support for Healthy Hair Growth: A healthy scalp environment, free from excessive inflammation and oxidative stress, is fundamental for healthy hair growth. Niacinamide contributes to this optimal environment.
• Enhancement of Hair Appearance: By promoting a healthy scalp and potentially regulating oil production, niacinamide can contribute to hair that appears healthier, less greasy, and potentially more voluminous.
• Protection Against Environmental Damage: Its antioxidant properties provide a degree of protection to the hair follicles and scalp against damage from environmental pollutants and UV radiation.

Niacinamide in Haircare Products

Niacinamide is typically found in various haircare formulations, including shampoos, conditioners, scalp treatments, and serums. Its water-soluble nature makes it easy to incorporate into water-based products.

Concentration

The effective concentration of niacinamide in haircare products can vary. Studies on skin care suggest benefits at concentrations ranging from 2% to 5%. While specific optimal concentrations for hair and scalp may differ, products designed for scalp health often feature niacinamide in this range or slightly higher.

pH Considerations

Niacinamide is generally stable across a wide pH range, typically between 5.0 and 7.0, which aligns well with the typical pH of many haircare products. This stability ensures that the ingredient remains effective within the product formulation.

Usage and Considerations

Niacinamide is generally well-tolerated. For individuals with sensitive skin or scalp, it is always advisable to perform a patch test before widespread use of a new product. Apply a small amount of the product to an inconspicuous area of the scalp and observe for any adverse reactions over 24-48 hours.

Synergistic Ingredients

Niacinamide can work synergistically with other ingredients often found in haircare products. For instance, its anti-inflammatory effects can complement other soothing agents, and its barrier-supporting properties can enhance the efficacy of hydrating ingredients.

---

Find these ingredients in Watermans products

• Niacinamide — you will find this ingredient in our Hair Mask.