Papa & Filles · Ingredient education
Niacinamide for the scalp: the skin-barrier connection
Niacinamide is a form of vitamin B3, also called nicotinamide. Its connection to scalp care begins with skin: it has been studied for effects on the skin’s barrier, rather than only for what happens to the hair above it. Source: skin-barrier research.
What is the skin barrier?
The outer skin layer includes lipids, such as ceramides, that contribute to its barrier properties. One way researchers assess that barrier is transepidermal water loss, or TEWL: water passing from the body through the skin into the surrounding air.
That measurement is different from the amount of hair on a scalp. It is useful to understand because “healthy-looking hair,” “skin hydration” and “hair growth” are sometimes bundled into one vague promise, although they describe different things.
What niacinamide research examined
A 2000 study by Tanno and colleagues investigated nicotinamide in cultured human skin cells and through topical application. Researchers reported changes in skin lipids and reduced water loss in dry skin. Original study
That supports a discussion of niacinamide’s skin-care background. It does not demonstrate hair regrowth or establish the performance of our finished scalp serum. We have not tested this formula’s effect on scalp TEWL.
Why the scalp belongs in the routine
Our reason for creating a scalp step is simple: haircare routines often concentrate on cleansing, conditioning and styling the hair itself. A product directed to the scalp asks you to pay attention to a different application area.
When comparing products, read the directions before deciding where they fit. Does the product go on the scalp, the lengths or both? Is it rinsed off or left in? How often is it intended to be applied? Clear answers make a routine easier to follow than a long list of ingredient buzzwords.
Niacinamide does not have to be presented as a hair-growth ingredient to have a place in that conversation. Its skin-care research is interesting on its own terms.
Reading our featured formula
Papa & Filles’ Dual Peptide Scalp Serum lists niacinamide at 2%. It appears alongside two copper peptides, caffeine, panthenol and sodium hyaluronate.
Each name gives you a different part of the formula’s story. The peptides are distinct molecules; niacinamide is vitamin B3; panthenol is provitamin B5; sodium hyaluronate is associated with water-binding properties. We explain them individually so that “serum” does not become a substitute for useful information.
The six featured ingredients are not the complete INCI list. Check the finished product label for directions and contact us for the complete ingredient list before purchasing.
Quick answers
Is niacinamide the same as panthenol? No. Niacinamide is associated with vitamin B3; panthenol with provitamin B5. They are separate ingredients with different research backgrounds.
Does a barrier study prove a product treats scalp conditions? No. The study must match the formulation, application and outcome being claimed. This serum is presented as cosmetic scalp care.
Can I apply it like a facial serum? Follow this product’s scalp-specific directions and final label. A familiar ingredient does not make two products interchangeable.
Meet the serum. 30 mL at $79 CAD. View current availability and ordering.