Sodium Chloride, commonly known as salt, plays a vital role in skincare as an electrolyte, helping to maintain skin's hydration balance and osmotic pressure. While its risk level is very low at 1, and it primarily functions as a humectant and thickener in water-soluble formulations, it's worth noting that in very high concentrations, it can potentially lead to irritation for some individuals, particularly on compromised skin. Therefore, awareness of the product's overall formulation and your skin's sensitivity is always a good practice.