As an AI language model, I can provide some general information, but it's important to consult with a dermatologist or healthcare professional for personalized advice.

Hyaluronic acid (HA) and clindamycin are both commonly used in skincare, but for different purposes.

Hyaluronic acid is a moisturizing ingredient that helps to hydrate the skin by attracting and retaining moisture. It is generally well-tolerated and can be used by most skin types.

Clindamycin is an antibiotic that is often prescribed for the treatment of acne. It helps to reduce the number of acne-causing bacteria on the skin and can also have anti-inflammatory effects.

When it comes to using these two ingredients together, there is no known interaction or contraindication. Therefore, it is generally safe to use hyaluronic acid and clindamycin together in your skincare routine.

However, it's always a good idea to consult with a dermatologist or healthcare professional before combining any skincare products or medications. They can provide personalized advice based on your specific skin type, concerns, and any other medications you may be using.