If you regularly use styling products, rely on dry shampoo, or style your hair for special occasions, you may recognise this experience: you wash your hair as usual, yet one shampoo doesn’t feel quite enough. Your roots may still feel coated, or you may even notice residue on the scalp. This is commonly referred to as build-up and can make wash days feel less effective — often leaving you feeling as though your hair needs washing more often.
So, what is build-up and what causes it?
It’s when residue from your haircare products, minerals from hard water, or even your body’s own oil accumulate on your scalp. While almost everyone experiences this from time to time, persistent build-up can cause major hair challenges.
There are three main types of scalp build-up:
- Sebum build-up, caused by overactive oil production.
- Product residue, when shampoo, conditioner, or styling products are not fully rinsed away.
- Dead skin build-up, which occurs when skin cells shed too quickly, leading to flaking and itchiness.
A few key causes of product build-up:
Infrequent washing: Reapplying products between wash days allows layers of residue to accumulate on the scalp.
Dry shampoo: Designed to absorb oil at the roots, repeated use can easily lead to build-up over time.
Volumising products (mousse, gel, texture spray): Formulated to add grip and texture, these products can cling to the scalp, especially when layered.
Silicones: These ingredients form a film on the hair, making residue harder to remove with regular washing.
If left untreated, scalp build-up can affect the health and appearance of your hair, as it leads to hair that feels greasy, weighed down, or flat. In severe cases, build-up can result in scalp irritation, inflammation, and infection.
Ok, so I have build-up – how do I get rid of it?
Wash more often
Washing more frequently can help remove residue, but for many people it leads to dryness, irritation, or rebound oiliness — especially on sensitive scalps.
Use less product
Another simple way to reduce build-up is by using fewer products. By limiting the number of layers applied to the hair, there is less opportunity for residue to accumulate on the scalp. However, if you’ve found a combination of products that genuinely work for your hair and help you achieve your preferred style, removing one or more from your routine can be easier said than done.
Double cleanse – the tried and true method of eliminating build-up
Shampooing twice on wash days is often the most reliable way to remove scalp build-up. The first cleanse helps loosen and lift excess oil, product residue, and impurities, while the second cleanse focuses on properly cleansing the scalp and hair — much like removing makeup before washing your face. While this approach can take more time and means you may go through shampoo faster, it is effective.
There’s got to be a better way, right?
Yes — and it starts before you shampoo. Pre-wash scalp oiling is one of the most effective ways to remove build-up without stripping the scalp. Oil has a natural ability to dissolve excess sebum and oil-based residue, making it easier to lift away impurities before cleansing.
Instead of scrubbing harder or washing more often, a targeted pre-wash treatment helps loosen build-up so shampoo can do its job more effectively.
Hemptouch has you covered: meet CBD Revive Scalp Treatment, our intensive botanical pre-wash oil designed to gently dissolve excess sebum, product build-up, and impurities before you even step into the shower. The lightweight oil formula works like a cleansing balm for the scalp, helping to loosen and break down residue so shampoo can cleanse more effectively. Simply apply directly to the scalp, leave on for 20 minutes to 2 hours, then shampoo as usual.
CBD Revive Scalp Treatment 50 ml
Intensive botanical pre-wash treatment oil for the scalp. Stimulates hair growth and protects against hair loss. Soothes, hydrates.. Details
€32.50
CBD helps regulate sebum and soothe irritation, while tea tree and rosemary oils provide purifying, antimicrobial support to keep the scalp fresh and clean. Hemp seed, pumpkin seed, and castor oils replenish essential lipids, supporting the scalp barrier so it stays balanced rather than stripped. Peppermint oil delivers a refreshing cooling sensation that instantly relieves itchiness.
Despite being oil-based, the formula rinses out clean with shampoo, leaving no greasy residue — just a scalp that feels lighter, calmer, and truly clean. Now you can extend your wash days and use the products you love — knowing that regular pre-wash scalp oiling helps prevent build-up and keeps your scalp balanced, comfortable, and refreshed.
Posted by Barbara Novak on date , updated on .
