Yes, you can use lactic acid and argireline together in your skincare routine. Lactic acid is an alpha hydroxy acid (AHA) that exfoliates the skin, helps to improve texture, and promotes cell turnover. On the other hand, argireline is a peptide that is known for its ability to reduce the appearance of fine lines and wrinkles by inhibiting muscle contractions.

When using these two ingredients together, it's important to consider their individual strengths and potential side effects. Lactic acid can cause mild skin irritation, especially for those with sensitive skin, so it's essential to start with a lower concentration and gradually increase as your skin tolerates it. Additionally, it's crucial to use a broad-spectrum sunscreen during the day as AHAs can increase sun sensitivity.

Argireline, being a peptide, is generally well-tolerated by most skin types. However, it's always recommended to do a patch test before incorporating any new product into your routine, especially if you have sensitive skin.

To use these ingredients together, you can apply lactic acid as a leave-on exfoliant in the evening, following the product instructions. After allowing it to absorb into the skin, you can then apply a product containing argireline, such as a serum or cream, focusing on areas where you want to target fine lines and wrinkles.

Remember, everyone's skin is unique, so it's essential to listen to your skin's response and adjust the frequency or concentration of these ingredients accordingly. If you have any concerns or specific skin conditions, it's always a good idea to consult with a dermatologist or skincare professional for personalized advice.