Combining Sodium Lactate, Sodium PCA, and Urea

It is not strictly necessary to use Sodium Lactate together with Sodium PCA and Urea, but it is recommended for maximum moisturizing efficiency. These three ingredients are important components of the skin's Natural Moisturizing Factor (NMF), which helps maintain skin hydration.

Sodium Lactate and Urea are often used together, particularly in formulations for dry, cracked skin like on heels or elbows. This is because both ingredients are effective moisturizers and also have exfoliating properties, helping to soften rough skin while providing intense hydration.

When incorporating these ingredients into a formula, the specific ratio can vary depending on the desired effect and the overall formulation. However, here are the typical recommended usage ranges for each ingredient:

• Sodium Lactate (60% Liquid): 2-10% (3-5% is often recommended for moisturizing; using more than 3% can help accelerate skin cell turnover)
• Urea (Powder): 3-20% (3-5% for moisturizing; 10-20% for combined exfoliating and moisturizing effects)
• Sodium PCA (50%): 0.5-2% for moisturizing

You can combine them within these recommended ranges based on the specific needs of your formulation.