- A unique Humidity Shield Complex nourishes and protects curls from frizz while gently cleansing for manageable, healthy-looking styles. Moisture levels within curls are a delicate balance. Without the right amount of moisture, curls can be suppressed by unwanted volume and frizz. Climate Control Shampoo is a gentle, defrizzing formula that provides long-lasting protection from texture trouble like frizz, flyaways and unwanted volume. Free from sulfates, which can be damaging to the cuticle, this shampoo empowers curls with a breathable humidity shield that locks in moisture and seals out frizz. Apply a quarter-size amount to wet curls and gently massage throughout hair. Use fingertips only to massage the scalp, then gently comb outstretched fingers in a downward motion through the hair to cleanse and detangle. Rinse thoroughly and follow with Climate Control Defrizzing Conditioner. NOTE: Never bunch up or scrub hair while shampooing. This roughens the cuticle and weakens hair, causing frizz and other damage. Shampooing every day is not necessary. Less frequent shampooing allows natural oils to lubricate and protect hair. When not shampooing, use a light spritz of Ouidad Botanical Boost to recap curls and refresh style.