How do I know if my scalp is out of balance?

Common signs include itching, dandruff, redness, increased hair loss, greasy hair despite being freshly washed, or a feeling of tenderness on the scalp. One or more of these symptoms may indicate that the scalp’s environment needs to be restored.

How do I know if my scalp needs a deep cleanse?

If your hair feels heavy, lifeless, or itchy despite regular washing, it may be time for a deep cleanse. This is a common sign that conditioner or styling products have left buildup on your scalp.

How do I know what hair type I have?

Look at the hair after it has dried naturally without products. Straight hair falls straight down. Wavy hair forms soft S-shapes. Curly hair forms defined spirals or ringlets. Fine hair feels light and thin between the fingers regardless of its curl pattern.

Are FOAM shampoo bars sulfate-free?

Yes, our shampoo bars are completely sulfate-free and also free from silicones and added preservatives. FOAM is a gentle alternative to conventional shampoo and is formulated to suit even the most sensitive scalp.

Is a transition period needed when switching to solid shampoo?

If you have previously used traditional shampoo containing silicones, your hair may need 1–2 weeks to adjust. During this time, silicone residue is washed out and the scalp’s natural oil production is balanced, resulting in healthier, more natural-looking hair.

How long does a shampoo bar last?

A shampoo bar from FOAM is concentrated and often lasts the equivalent of at least 2 regular-sized bottles of shampoo. Store the shampoo bar in a dry place between uses so it lasts longer.

Scalp and dry hair: how to restore balance and get softer strands

Dry hair and an unbalanced scalp often go hand in hand. When the scalp is dehydrated, due to harsh sulfates or washing too frequently, it compensates by producing more sebum. The result is a scalp that feels oily while the strands are still dry. The solution is a moisturizing, sulfate-free shampoo that cleanses gently and allows the scalp to restore its natural balance.

Dry hair is rarely a problem that starts in the lengths. It starts at the scalp. When the scalp’s sebaceous glands do not produce enough sebum, or when sebum cannot travel down the strands because of a damaged cuticle, the strands dry out from the inside. No amount of leave-in product or hair mask can compensate for a scalp that is not functioning properly.

Understanding the connection between scalp health and dry hair is the first step toward softer, more cared-for hair.

Why dry hair often starts at the scalp

Scalp sebum is the hair’s natural moisture barrier. It protects the cuticle and keeps moisture inside the cortex of the strands. When harsh sulfates strip away this sebum with every wash, the cuticle is left open and the strands quickly lose moisture. The scalp responds by producing more oil, but the increased oil production rarely reaches the lengths, especially if the hair is long or curly.

The result is hair that feels oily at the roots but dry and straw-like through the lengths, and that needs to be washed more and more often to feel clean. Learn more about how the scalp works in our complete guide to scalp health.

Common causes of a dry scalp and dry strands

Cause	What happens	Solution
Harsh sulfates	Strip away sebum and open the cuticle	Switch to a sulfate-free shampoo
Washing too frequently	The scalp does not have time to restore its natural oil balance	Gradually space out washes
High heat when blow-drying	Damages the cuticle and increases moisture loss	Use low heat and finish with cool airflow
Dry air and seasonal changes	The strands lose moisture to the surrounding environment	Use a moisturizing leave-in product and hair mask
Not using a hair mask often enough	Moisture deficiency builds up over time	Use a hair mask 1-2 times per week

Editor's Note: Dry hair and a dry scalp are not always the same thing. The scalp can be balanced while the lengths are dry due to heat damage or mechanical friction. Identify where the dryness begins before choosing a solution.

Learn more about how to choose the right shampoo for dry hair in our guide to shampoo for dry hair.

White Flower shampoo bar for volume and balance

How to build a routine for dry hair and scalp

Wash with a sulfate-free shampoo and massage the scalp thoroughly with your fingertips for 2-3 minutes.
Use conditioner every time you wash on the lengths and ends, and leave it on for 3-5 minutes before rinsing.
Use a hair mask 1-2 times per week for deeper moisture that reaches the cortex of the strands.
Rinse with cool water to close the cuticle and lock in moisture.
Dry with microfiber and avoid rubbing, as this opens the cuticle and increases frizz.

For a complete guide to moisturizing dry hair, from shampoo and conditioner to hair masks and leave-in products, read our guide to moisturizing dry hair.