Research shows the the use of Salicylic Acid and Nicotinamide have positive effects on the appearance of scars, textures, and pores than the use of either ingredient alone.
a regimen of products containing niacinamide and salicylic acid versus an OTC benzoyl peroxide product regimen were evaluated in women. The niacinamide and salicylic acid versus regimen provided a significantly better skin hydration effect than the benzoyl peroxide regimen and comparable acne lesion benefits. The former was also significantly more effective in improving visible skin surface texture, pore size, and pore count (as shown above). Additionally, significant correlations among these skin parameters were found, indicating a connection between pore parameters and texture appearance, establishing that reduction of surface sebum, and thus visible pore size, is a valid target for improving skin texture appearance.