DDConcept Brand Profile
DDConcept (DDC) is a Hong Kong-based skincare brand specializing in dermatological science. We develop truly effective daily care products from a skin science perspective, ensuring consumers can access high-quality skincare that is clinically tested, meticulously formulated, and safe—without paying a premium.
Science-Backed Skincare Expertise
Founded by Sam Leung, a graduate of The Chinese University of Hong Kong, DDConcept combines over 20 years of global cosmetic industry expertise with cutting-edge dermatological research. As the former China head for leading ingredient suppliers BASF, Croda, and Sederma, and a key figure in bridging IFSCC (International Federation of Societies of Cosmetic Chemists) with China, we redefine functional skincare through a global ingredient perspective.
Brand Philosophy:
"Less is more"—precision over excess. We rigorously select clinically proven active ingredients and adhere to:
✓ No heavy metals/alcohol/hormones
✓ No artificial dyes/mineral oils/optical brighteners
✓ No phenol-based preservatives
Certified Excellence:
Our EU-standard formulations integrate advanced active ingredients to deliver dermatologist-endorsed, results-driven skincare.
DDConcept Scalp Health Guide
Understanding Dandruff
Dandruff refers to excessive shedding of dead skin cells from the scalp, often accompanied by itching, redness and irritation. While minor flaking is normal, abnormal scaling may indicate conditions like seborrheic dermatitis or fungal infections, with multifactorial causes.
Primary Causes
▌Fungal Dandruff (70%+ cases)
Malassezia furfur, a naturally occurring scalp fungus, triggers visible flakes when overgrowth disrupts keratinocyte renewal cycles.
▌Dry Scalp
Common in dry climates/seasonal changes, characterized by small, non-greasy flakes from compromised moisture barrier.
▌Seborrheic Dermatitis
Chronic inflammatory condition presenting with red, oily scalp and yellowish scales.
▌Contact Dermatitis
Irritants in haircare products or over-washing may damage scalp microbiome balance.
▌Other Contributors
• Hormonal fluctuations
• Stress & immune function
• Genetic predisposition
• Sebum overproduction
DDConcept Science-Based Solutions
Our selenium sulfide-powered system integrates 3rd-gen anti-dandruff technology to:
✓ Rebalance scalp microbiome
✓ Normalize keratinocyte turnover
✓ Soothe inflammation & itching
✓ Reinforce epidermal barrier
Consult dermatologists if symptoms persist after 4-6 weeks of proper use. Please follow usage instructions carefully.
FAQS
Do I need to shake the selenium sulfide shampoo before use?
No! DDC Selenium Sulfide Shampoo utilizes micron-suspension technology to overcome the limitations of ordinary selenium sulfide formulas:
No sedimentation - Remains uniformly stable even after prolonged storage, eliminating the need to "shake before use"
Consistent anti-dandruff efficacy - Each pump delivers the standardized active concentration for effective dandruff control
How to use selenium sulfide shampoo?
Step 1 Thoroughly wet hair with warm water
Step 2 Take an appropriate amount of shampoo, lather in palms, then apply foam to scalp
Step 3 Gently massage scalp with fingertips for 3-5 minutes to ensure full contact
Step 4 Rinse thoroughly with warm water until no foam remains
Recommended usage frequency?
3-4 times per week. This moderate frequency optimally maintains scalp oil-water balance and scalp health. However, as individual scalp conditions vary, the specific amount and frequency can be adjusted accordingly. (Initial use: 3-4 times weekly; after dandruff reduction: decrease to 1-2 times weekly)
Precautions when using selenium sulfide shampoo
Water temperature should not exceed ≈40°C to avoid scalp irritation
Recommended to use with hair mask or conditioner for smoother hair
Avoid 1:1 mixing with other shampoos as this reduces selenium sulfide concentration and compromises efficacy
Recommended two-step washing: first wash removes oil/dirt; second wash provides proper cleansing
Gently pat hair dry with towel to absorb excess water - avoid rough rubbing that damages scalp barrier and increases keratin shedding
Is it suitable for seborrheic dermatitis?
Yes. Seborrheic dermatitis typically manifests as scalp/facial redness, itching, and scaling, which is associated with Malassezia overgrowth. The selenium sulfide in DDC shampoo helps inhibit Malassezia activity, alleviating symptoms and improving scalp condition. However, as seborrheic dermatitis falls under dermatological conditions, severe cases should seek medical treatment promptly.