Yes, you can use salicylic acid, niacinamide, and hyaluronic acid together in your skincare routine. Each of these ingredients serves a different purpose and can provide various benefits to the skin.

Salicylic acid is a beta-hydroxy acid (BHA) that is commonly used to treat acne and exfoliate the skin. It helps to unclog pores, reduce inflammation, and regulate oil production. It is best used in targeted treatments like spot treatments or toners.

Niacinamide, also known as vitamin B3, is a versatile ingredient that offers multiple benefits for the skin. It helps to regulate sebum production, reduce the appearance of pores, even out skin tone, and improve the skin's barrier function. It is well-tolerated by most skin types and can be used in serums, moisturizers, or toners.

Hyaluronic acid is a humectant that attracts and retains moisture in the skin. It helps to hydrate and plump the skin, reducing the appearance of fine lines and wrinkles. It is suitable for all skin types and can be used in serums, moisturizers, or masks.

When using these ingredients together, it is important to introduce them gradually into your routine and monitor how your skin reacts. Start by using each ingredient separately to ensure your skin tolerates them well before combining them. Additionally, it is essential to follow the instructions provided by the product manufacturer and consult with a skincare professional if you have any concerns or specific skin conditions.