Joanna Styling Effect, a smoothing silk for hair care. This product provides protection for strands, facilitates styling, and adds a beautiful finish. It also protects against high temperatures. Joanna Styling Effect Silk - Learn How It Works hydration, smoothing and shine, protection against split ends, easier styling. Joanna Styling Effect Silk gives hair a beautiful, radiant shine, silky softness, and a healthy appearance after use. The product is packaged in a practical pump dispenser that allows for dispensing the right amount of product.