ONE Library
What an ingredient really does, how skin works and how a treatment is built. For professionals who want to answer their clients' questions with confidence, and for anyone who wants to understand what they put on their face.
Active ingredients
What an ingredient does, at what concentration it does it, and how to recognise a good formulation.
All articles: Active ingredients- Active ingredients
Ceramides: The Lipids That Keep the Skin Barrier Sealed
What ceramides are, why skin loses them and how to recognise a formula that genuinely restores the barrier. The difference between lipids and humectants, explained simply.
- Active ingredients
Growth Factors in Skincare: What They Are and How They Work
Growth factors are signaling proteins that let skin cells communicate. What they are, how cosmetics use them through peptides and exosomes, who they suit, and how to add them to your routine.
- Active ingredients
Niacinamide (Vitamin B3): The Facts and the Myths
How it works in skin, what published research shows for sebum, pores, pigmentation and the barrier, what concentration makes sense, and why the vitamin C myth is out of date.
- Active ingredients
AHA Acids: Complete Guide to Chemical Peeling
Everything about alpha-hydroxy acids - glycolic, lactic, mandelic. How they work, when to use them and how to combine.
- Active ingredients
Aquaxyl™: Intelligent Hydration and Barrier Protection
How Aquaxyl™ regulates water balance, strengthens the skin barrier and prevents transepidermal water loss.
- Active ingredients
Argan Oil: Hair Penetration and Protection
Oleic acid penetrates the hair cortex while tocopherols provide antioxidant UV protection.
Skin science
The skin conditions clients come in with: acne, pigmentation, rosacea, a damaged barrier, sun damage.
All articles: Skin science- Skin science
Antioxidants and Summer Skin: A Guide to Daily Defence
How antioxidants protect skin from the oxidative stress of UV light, heat and pollution. The main antioxidants used in cosmetics and how to build a simple summer defence routine.
- Skin science
Natural Moisturizing Factors (NMFs): What They Are and Why Skin Needs Them
What natural moisturizing factors (NMFs) are, how they form from filaggrin, and how to support their levels for healthy, hydrated skin.
- Skin science
Skin Barrier: Why It Matters and How to Restore It
Everything about the skin barrier - how it works, what damages it and which ingredients help restore it. Focus on ceramides and phospholipids.
- Skin science
Sun-Damaged Skin: How to Reduce the Visible Signs
What sun damage is, how UVA and UVB rays reach different skin layers, the visible signs, and which ingredients and habits help reduce the marks and prevent new ones.
- Skin science
Types of Blemishes: Blackheads, Sebaceous Filaments, Milia and Papules
Not every dark dot is a blackhead and not every bump is a pimple. How to recognise each type of blemish, why squeezing makes marks worse, and when cosmetics are not enough.
- Skin science
Acne and Seborrhea
Acne vulgaris is a multifactorial disease characterized by increased sebum secretion, follicular hyperkeratosis and colonization with Cutibacterium acnes (formerly Propionibacterium acnes).
Skincare routines
Home care between two appointments: what to use, and in what order.
All articles: Skincare routines- Skincare routines
Collagena Natural at ONE Cosmetix: what the line offers
A look at Collagena Natural in the ONE Cosmetix catalog. A line with plant exosomes, phospholipids and patented collagen hydrolysate for daytime protection and overnight repair.
- Skincare routines
How to Use Retinol: The Complete Retinoid Guide
A practical guide to retinoids: what they are, how to choose between retinol and bakuchiol, when to start, which ingredients to avoid, and where they fit in your evening routine.
- Skincare routines
Sensitive Skin Routine: Step by Step with the Right Products
Complete guide to sensitive and reactive skin care - from cleansing to protection, focusing on gentle ingredients.
- Skincare routines
Summer Skincare for Oily Skin: A 4-Step Routine
Why skin looks oilier in summer and how to build a 4-step summer routine for oily skin: gentle cleansing, sebum-balancing ingredients, lightweight hydration and daily sun protection.
- Skincare routines
Acne Skincare Routine: Professional Tips for Clear Skin
How to build an effective anti-acne routine - proper cleansing, BHA exfoliation, niacinamide serums and SPF protection.
- Skincare routines
Anti-Aging Routine: Science-Based Approach
How to combine retinol, peptides, vitamin C and DMS technology for maximum anti-aging effect.
Hair science
Hair and scalp for the salon: structure, chemical damage, colour, bonds, and what rebuilds them.
All articles: Hair science- Hair science
Chemical Damage to Hair: Mechanisms and Repair
How coloring, bleaching and perming break disulfide bonds and how molecular plex treatments restore them.
- Hair science
Color-Treated Hair: Color Chemistry and Protection
Scientific overview of the oxidation process in coloring, color fading and protection strategies with violet pigments.
- Hair science
Hair shampoos | Sulphates, pH, scalp types
How shampoos work: surfactants, pH and washing frequency. The difference between SLS, SLES, SCI and amino acid surfactants. Choosing by scalp and hair type.
- Hair science
Hair Structure: Cuticle, Cortex and Medulla
Anatomy of the human hair shaft - from the protective cuticle to the keratin cortex. Understand how structure determines hair health.
- Hair science
Keratin vs Collagen for Hair: Which Is the Better Choice?
Learn the differences between keratin and collagen for hair - when to use each and how to combine both for maximum results.
- Hair science
Liquid Crystals for Hair: Complete Guide to Shine and Protection
What are liquid crystals for hair, how they work and how to choose the right one - with argan oil, macadamia or for split ends.
Professional insights
Protocols, consultation and aftercare: how the products are actually used in a treatment.
All articles: Professional insights- Professional insights
Chemical Peels and Active Serums: Combinations and Protocols
How to combine AHA/BHA peels with vitamin C, niacinamide and retinol serums in a professional setting.
- Professional insights
Client Consultation: How to Analyze the Skin
Systematic approach to skin diagnosis - from skin type to determining the right therapy with ONE products.
- Professional insights
Home vs Professional Skincare | When to Choose Which
Home versus professional skin care: the real differences, what each achieves and how to combine both. A guide from ONE Cosmetix Bulgaria.
- Professional insights
How to Layer Professional Serums Effectively
Professional guide to serum layering - from water to oil-based, from actives to protective.
- Professional insights
Non-Invasive Aesthetics: How Collagena Professional® Supports Scalpel-Free Procedures
How non-invasive aesthetic procedures (microneedling, ultrasound, radiofrequency lifting, chemical peeling and LED therapy) achieve remarkable results with the active formulas of Collagena Professional®.
- Professional insights
Post-Procedure Care: Recovery Protocols
How to ensure optimal recovery after peeling, microneedling and laser procedures with DMS and panthenol.
Technologies
Delivery systems and formulation technology: why the same ingredient behaves differently in two products.
All articles: Technologies- Technologies
Exosome Technology: The New Era of Regenerative Cosmetics
How plant stem cell exosomes activate cellular regeneration and slow skin aging.
- Technologies
Derma Membrane Structure (DMS)
Biomimetic lamellar system for skin barrier repair and controlled active delivery.
- Technologies
DMS Technology: The Future of Cosmetic Delivery
How Derma Membrane Structure revolutionizes active ingredient penetration and skin barrier restoration.
- Technologies
Liposomal Delivery: How Actives Reach Deep into the Skin
Scientific overview of liposomal technology for optimal absorption of resveratrol, vitamins and peptides.
Aromatherapy
Essential oils in cosmetics: what they do, how they are diluted, and when they are not used.
All articles: Aromatherapy- Aromatherapy
Aromatherapy for beginners: how to choose your first essential oils
Which oil does what, why dilution is not optional, and which three oils make the most sensible start. A practical guide without the myths.
- Aromatherapy
Essential oils for a restful night: an evening ritual that works
Which essential oils suit the evening, how many drops in a diffuser, and why oil should not go straight on your pillow. A practical evening ritual.
- Aromatherapy
How to make massage oil at home: ratios and three recipes
How many drops of essential oil in how much carrier, which carrier to choose, and three ready recipes: for relaxing, for freshness and for dry skin.