The Ordinary Lactic Acid 5% + HA is a mild and effective solution designed for people who want smoother skin without harsh irritation. Lactic acid is a type of alpha hydroxy acid (AHA) that works by gently removing dead cells from the surface of your face. This process helps to reveal a fresher, more glowing complexion underneath. Because this specific formula uses a 5% concentration, The Ordinary Lactic Acid 5% + HA is the perfect starting point for those who are new to chemical exfoliation or those with a delicate skin types.

Why is This Formula Great for Sensitive Skin?

Many people worry that using acids will make their skin red or uncomfortable. However, The Ordinary Lactic Acid 5% + HA is supported by a special ingredient called “purified Tasmanian pepperberry extract.” This extract has been shown in studies to reduce the signs of inflammation and the sensitivity that sometimes comes with using acids. This makes The Ordinary Lactic Acid 5% + HA a very safe and comfortable choice for dry and sensitive skin types. This water-based serum ensures that your skin stays hydrated while it is being treated.

The Science Behind The Ordinary Lactic Acid 5% + HA

When using skincare acids, the balance between pH and acidity is very important for the product to work correctly. The Ordinary Lactic Acid 5% + HA is formulated with a pH of approximately 3.8. In science, this matches the pKa of lactic acid, which is also 3.8. Having the pH and pKa so close together means there is a perfect balance between salt and acidity. This balance ensures that The Ordinary Lactic Acid 5% + HA is working at its maximum effectiveness while keeping the risk of skin irritation as low as possible.

How to Use the Serum in Your Regimen

To get the best results from The Ordinary Lactic Acid 5% + HA, you should follow these steps:

Step 1 (Prep): Start by thoroughly cleansing your face.
Step 2 (Treat): Apply The Ordinary Lactic Acid 5% + HA to your dry skin.
Order of Use: Use this serum after cleansing but before you apply any anhydrous serums, oils, suspensions, or heavy creams.
Evening Use: It is usually best to use exfoliating acids like The Ordinary Lactic Acid 5% + HA in the evening to allow your skin to recover overnight.