In Canada, the anti-dandruff segment held the largest market share in 2024, accounting for 40.42% of total revenue. This dominance is partly driven by higher usage among men, who are more likely than women to purchase anti-dandruff or scalp shampoo due to a greater prevalence of dandruff.
What factors explain this disparity? Does it stem from hygiene, genetics, or other underlying causes?
Malassezia
This microorganism is a natural part of the skin’s microbiome and is essential for maintaining skin health. It feeds on triglycerides, fats found in the skin’s natural oils, and breaks them down into byproducts such as oleic acid. Under normal conditions, this process is harmless. However, when Malassezia multiplies excessively, it produces an increased amount of these byproducts, which can trigger inflammation and disrupt normal skin cell turnover.
The exact reasons behind this overgrowth are not fully understood. Genetic factors may contribute, and certain medical conditions appear to increase susceptibility. These include:
- HIV
- Alzheimer’s disease
- Parkinson’s disease
- Lymphoma
- A history of organ transplantation
Oily Scalp
Excess oil production is a factor in the development of dandruff. The skin’s oil-producing structures, known as sebaceous glands, can become overactive, particularly during periods of hormonal change such as puberty. During these times, increased oil (sebum) is released into the hair follicles and onto the scalp. This oil-rich environment promotes the overgrowth of yeast on the skin.
A major hormonal driver of this process is dihydrotestosterone (DHT), a derivative of testosterone. High DHT levels can overstimulate sebaceous glands, especially in individuals with a genetic predisposition. Certain variations influence both DHT production and the sensitivity of oil glands to it. As a result, people with these traits may be more prone to an oily scalp, increased dandruff, and hair thinning linked to DHT activity.
Fade O’clock barbers offer a deep scalp cleaning that includes exfoliation, scalp massage, and shampooing. This service removes buildup and leaves your scalp feeling clean and refreshed.
Bad Hair Care Habits
Washing your hair too frequently can remove the scalp’s natural oils. You’ll end up with dry and dehydrated scalp.
Dry and sensitive scalps can develop dandruff, but the cause differs from oil-related dandruff. Instead of excess sebum producing larger, yellow, and sticky flakes, dry scalp dandruff results from a lack of moisture. This dehydration can speed up skin cell turnover.
However, infrequent washing can also be problematic, as it allows excess oil to build up. This creates an environment that can promote dandruff, since the yeast responsible for flakes feeds on scalp oils.
Underlying Condition
Certain medical conditions can affect the scalp by making it more susceptible to flaking and dryness. For instance:
- Psoriasis speeds up skin cell turnover, which can lead to the formation of thick, silvery scales on the scalp
- Eczema is well known for causing dry, itchy, and irritated skin.
It is therefore common for individuals with conditions such as psoriasis, eczema, or seborrheic dermatitis to experience dandruff alongside their other primary symptoms.
Stress
Psychological stress can negatively affect skin health by increasing the likelihood of conditions such as dandruff.
Stress can heighten skin sensitivity, slow down its ability to repair itself, and disrupt the production of natural oils. These changes can contribute to irritation and flaking. It may also weaken the immune system and impair circulation.
Several stress-related effects can further intensify symptoms:
- Lead to overheating and excess sweat, creating a moist, oil-rich environment where dandruff-causing yeast can thrive.
- Disrupts hormonal balance, potentially increasing sebum production.
- Scratching the scalp or touching the hair frequently can transfer dirt and oils from the hands.
- Exacerbate existing skin conditions like eczema.
Certain Hair Products
Dandruff may be triggered or worsened by the products used in your haircare routine. Sensitivity or irritation from certain ingredients can lead to scalp flaking, so choose mild formulations and monitor how your scalp reacts. Fragrances and artificial dyes, in particular, can be problematic for individuals with sensitive skin.
Additionally, shampoos containing ingredients such as sodium lauryl sulphate (SLS) and sodium laureth sulphate (SLES) may contribute to dryness and irritation. These cleansing agents can strip away the scalp’s natural oils and leave hair feeling dry, brittle, and more prone to frizz while also increasing the likelihood of flaking.
Scalp Shampoo at Home and a Barber Shop Can Help with Dandruff and Flaking
Anti-dandruff shampoos are formulated with active ingredients that target dandruff and its underlying causes, including piroctone olamine, zinc pyrithione, selenium sulphide, and salicylic acid, among others. In addition to their chemical action, the physical process of massaging the shampoo into the scalp also helps by loosening flakes, removing buildup, and stimulating circulation in the scalp.
Many of these shampoos rely on antifungal agents that help control the growth of Malassezia, the yeast commonly linked to dandruff. Common antifungal ingredients include:
- Piroctone olamine
- Zinc pyrithione
- Selenium sulfide
- Ketoconazole
- Ciclopirox olamine
- Climbazole
Some formulations also contain salicylic acid, which acts as a keratolytic agent. It helps exfoliate the scalp by breaking down and removing dead skin cells.
Get Deep Massage with Anti-Dandruff Shampoos at Fade O’clock
If you are experiencing dandruff, anti-dandruff shampoos are widely available in most stores and can help manage symptoms effectively. You can also book a monthly scalp treatment at our barbershop in Maple Ridge, Fade O’clock, where shampooing, massage, and exfoliation are combined to help remove dandruff and buildup while improving scalp circulation for healthier hair and scalp.
Frequently Asked Questions
Does dandruff go away after one wash?
Dandruff does not go away after a single wash. Anti-dandruff shampoos can remove visible flakes and reduce oiliness temporarily, but the underlying causes, such as yeast overgrowth, excess sebum, or dry scalp, take time to control. Consistent use over several washes is needed to see lasting improvement. If dandruff is persistent, it requires ongoing maintenance rather than a one-time treatment.
Can a good haircut help reduce dandruff?
A good haircut does not directly treat dandruff, since dandruff is caused by scalp-related factors like oil balance, yeast overgrowth, or dryness. However, shorter or well-maintained hair can make the scalp easier to clean and allow anti-dandruff products to reach the skin more effectively. It can also reduce the buildup of oil and product residue.
How does a scalp massage help reduce dandruff?
A scalp massage helps reduce dandruff mainly by loosening and lifting dead skin flakes from the scalp through gentle exfoliation. It also improves blood circulation, which supports a healthier scalp environment and can enhance the effectiveness of anti-dandruff shampoos. The massage action also helps break up oil and product buildup so cleansers can reach the scalp more effectively.
