B

Ingredients: B

Explore science-backed ingredients starting with B — from barrier-strengthening botanicals to brightening actives.

Bakuchiol

The Gentle Retinol Alternative

Type

Botanical Extract

Solubility

Oil Soluble

Best For

Fine Lines, Sensitive Skin

Found In

Serums, Night Creams

Efficacy Level

Clinically Proven

Origin

Psoralea Corylifolia

What It Does

Bakuchiol is a plant-derived meroterpene extracted from the seeds and leaves of the Psoralea corylifolia plant. It mimics the skin benefits of retinol—stimulating collagen production, accelerating cell turnover, and reducing hyperpigmentation—without the irritation, photosensitivity, or peeling commonly associated with retinoids. This makes it an ideal choice for sensitive skin types and those seeking gentler anti-aging solutions.

The Benefits

Reduces fine lines and wrinkles

Improves skin elasticity and firmness

Evens skin tone and reduces hyperpigmentation

Provides antioxidant protection

Non-irritating and gentle on sensitive skin

Safe for daytime use (no photosensitivity)

Backed by Science

A 12-week clinical study published in the British Journal of Dermatology (2019) demonstrated that bakuchiol significantly reduced wrinkles and hyperpigmentation with comparable efficacy to retinol, but without causing scaling, stinging, or photosensitivity. Multiple peer-reviewed studies confirm its ability to upregulate collagen types I, III, and IV gene expression while providing anti-inflammatory and antioxidant benefits.

Formulation Insight

Bakuchiol is best formulated in oil-based or emulsion systems at concentrations of 0.5–2%. It remains stable across a wide pH range and pairs exceptionally well with niacinamide, peptides, and hyaluronic acid. Unlike retinol, it does not degrade in sunlight, making it suitable for both AM and PM routines.

Did You Know?

Bakuchiol can be safely combined with retinol to enhance anti-aging results while minimizing irritation—a strategy increasingly used in advanced formulations.

How to Use It Safely

  • Typical Concentration: 0.5–2% in leave-on products
  • Frequency: Safe for daily use, morning or evening
  • Pairing: Combines well with vitamin C, niacinamide, and peptides
  • Caution: Generally well-tolerated; patch test if you have very sensitive skin

Ingredient Source & Sustainability

Bakuchiol is extracted from the seeds and leaves of Psoralea corylifolia, a plant traditionally used in Ayurvedic and Chinese medicine. Modern extraction methods are efficient and sustainable. It is vegan, cruelty-free, and biodegradable, aligning with clean beauty standards.

Benzoyl Peroxide

The Gold Standard Acne Fighter

Type

Antimicrobial Agent

Solubility

Oil Soluble

Best For

Acne, Breakouts

Found In

Spot Treatments, Cleansers

Efficacy Level

Highly Researched

Origin

Synthetic

What It Does

Benzoyl peroxide is a powerful antibacterial and keratolytic agent that works by releasing oxygen into the pores, creating an inhospitable environment for Cutibacterium acnes (formerly Propionibacterium acnes), the bacteria responsible for inflammatory acne. It also helps unclog pores by promoting gentle exfoliation and reducing excess sebum. Recognized by dermatologists for decades, it remains one of the most effective over-the-counter acne treatments available.

The Benefits

Kills acne-causing bacteria rapidly

Unclogs pores and prevents new breakouts

Reduces inflammation and redness

Works quickly—visible results in days

Available without prescription

Bacteria rarely develop resistance

Backed by Science

Benzoyl peroxide has been extensively studied since the 1960s. Clinical trials consistently demonstrate its efficacy in reducing both inflammatory and non-inflammatory acne lesions by 40–70% within 4–12 weeks. The American Academy of Dermatology and multiple peer-reviewed studies recommend it as a first-line treatment for mild to moderate acne due to its proven antimicrobial and comedolytic properties.

Formulation Insight

Benzoyl peroxide is formulated in concentrations ranging from 2.5% to 10% in gels, creams, washes, and leave-on treatments. Lower concentrations (2.5%) are often as effective as higher ones but cause less irritation. It works best in anhydrous or low-water formulations to maintain stability. Combination products with adapalene or clindamycin offer enhanced efficacy.

Did You Know?

Benzoyl peroxide can bleach fabrics and hair, so apply carefully and allow it to fully absorb before contact with towels or pillowcases.

How to Use It Safely

  • Typical Concentration: 2.5–10% in spot treatments or cleansers
  • Frequency: Start with once daily (evening), increase as tolerated
  • Pairing: Can be combined with salicylic acid or adapalene; avoid with vitamin C
  • Caution: May cause dryness, redness, or peeling—start slow and use sunscreen daily

Ingredient Source & Sustainability

Benzoyl peroxide is synthetically produced through a controlled chemical reaction. While not derived from natural sources, it is manufactured efficiently and is biodegradable. Its widespread availability and proven efficacy make it a cornerstone of acne therapy worldwide.

Beta-Glucan

The Soothing Skin Immunomodulator

Type

Polysaccharide

Solubility

Water Soluble

Best For

Sensitive, Irritated Skin

Found In

Serums, Moisturizers, Masks

Efficacy Level

Clinically Proven

Origin

Oats, Mushrooms, Yeast

What It Does

Beta-glucan is a naturally occurring polysaccharide found in oats, mushrooms, and yeast that acts as a potent skin-soothing and immune-modulating ingredient. It penetrates the upper layers of skin to stimulate collagen synthesis, accelerate wound healing, and reduce inflammation. By activating langerhans cells (immune cells in the skin), it helps fortify the skin's natural defense mechanisms while providing deep hydration and antioxidant protection.

The Benefits

Calms redness and irritation

Accelerates wound healing and repair

Boosts collagen production

Provides deep hydration

Strengthens skin's immune response

Protects against environmental damage

Backed by Science

Clinical studies published in journals like Dermatologic Surgery and Journal of Drugs in Dermatology demonstrate beta-glucan's ability to reduce post-procedure inflammation by up to 50% and accelerate healing time. Research shows it activates macrophages and enhances collagen synthesis while providing antioxidant protection equivalent to vitamins C and E.

Formulation Insight

Beta-glucan is typically formulated at concentrations of 0.5–2% in water-based serums, gels, and emulsions. It works synergistically with other hydrating and soothing ingredients like hyaluronic acid, ceramides, and centella asiatica. Its gentle nature makes it ideal for post-treatment care and sensitive skin formulations.

Did You Know?

Beta-glucan from oats (colloidal oatmeal) has been FDA-approved as a skin protectant since 2003 due to its proven safety and efficacy.

How to Use It Safely

  • Typical Concentration: 0.5–2% in leave-on products
  • Frequency: Safe for daily use, morning and evening
  • Pairing: Excellent with hyaluronic acid, ceramides, and niacinamide
  • Caution: Extremely well-tolerated; suitable for all skin types including very sensitive

Ingredient Source & Sustainability

Beta-glucan is naturally derived from oats, mushrooms (particularly shiitake and reishi), or yeast through sustainable extraction methods. It is vegan, biodegradable, and non-toxic to aquatic ecosystems, making it an environmentally responsible choice for clean beauty formulations.

Bisabolol

Chamomile's Calming Active

Type

Botanical Extract

Solubility

Oil Soluble

Best For

Sensitive, Reactive Skin

Found In

Calming Creams, Serums

Efficacy Level

Evidence-Based

Origin

Chamomile

What It Does

Bisabolol is a naturally occurring terpene alcohol derived from German chamomile (Matricaria chamomilla) known for its potent anti-inflammatory, antimicrobial, and skin-soothing properties. It penetrates deeply into the skin to reduce redness, calm irritation, and accelerate healing. Bisabolol is particularly valued in sensitive-skin formulations for its ability to enhance skin penetration of other actives while reducing their potential for irritation.

The Benefits

Reduces redness and irritation instantly

Provides anti-inflammatory benefits

Accelerates skin healing and repair

Offers antimicrobial protection

Enhances penetration of other actives

Ideal for post-procedure recovery

Backed by Science

Research published in International Journal of Cosmetic Science demonstrates bisabolol's ability to reduce UV-induced erythema and enhance skin barrier function. Studies show it inhibits cyclooxygenase and leukotriene synthesis—key mediators of inflammation—making it as effective as some pharmaceutical anti-inflammatories but with superior tolerability.

Formulation Insight

Bisabolol is typically formulated at 0.1–1% in emulsions, oils, and anhydrous products. It's heat-stable and works across a wide pH range (4–8). Due to its penetration-enhancing properties, it's often paired with actives like retinol, vitamin C, and niacinamide to improve their delivery while minimizing irritation. Both natural (ex-chamomile) and synthetic bisabolol are used in skincare with equivalent efficacy.

Did You Know?

Bisabolol has been used in European skincare and pharmaceutical products since the 1950s and is considered one of the safest and most versatile skin-calming ingredients available.

How to Use It Safely

  • Typical Concentration: 0.1–1% in leave-on products
  • Frequency: Safe for multiple daily applications
  • Pairing: Excellent with retinoids, AHAs, vitamin C to reduce irritation
  • Caution: Extremely well-tolerated; rare cases of allergy to chamomile should avoid

Ingredient Source & Sustainability

Bisabolol can be extracted from German chamomile essential oil or produced synthetically. Both forms are chemically identical and equally effective. Synthetic bisabolol offers greater consistency and sustainability, as it doesn't require large-scale chamomile cultivation. It is biodegradable, vegan, and environmentally friendly.

Biotin

Vitamin B7 — The Beauty Vitamin

Type

Vitamin (B7)

Solubility

Water Soluble

Best For

Brittle, Thinning Skin

Found In

Strengthening Treatments

Efficacy Level

Evidence-Based

Origin

Synthetic

What It Does

Biotin, also known as Vitamin B7 or Vitamin H, is a water-soluble vitamin essential for cellular energy metabolism and the synthesis of fatty acids—key building blocks for healthy skin, hair, and nails. In skincare, biotin supports the production of keratin and ceramides, strengthening the skin barrier and improving moisture retention. While it's most famous for promoting hair and nail growth when taken orally, topical biotin helps reinforce skin structure and resilience.

The Benefits

Strengthens skin barrier function

Supports cellular energy and metabolism

Improves skin hydration and texture

Promotes keratin production

Reduces inflammation and redness

Helps protect against environmental damage

Backed by Science

Research published in Skin Pharmacology and Physiology demonstrates biotin's role in fatty acid synthesis and energy metabolism—critical processes for maintaining healthy skin. Clinical studies show that biotin deficiency leads to dry, scaly skin and dermatitis, which resolve with supplementation. While topical biotin research is emerging, evidence suggests it strengthens barrier function and enhances ceramide production when applied directly to skin.

Formulation Insight

Biotin is typically formulated at concentrations of 0.01–0.5% in water-based serums, shampoos, and strengthening treatments. It's highly stable and compatible with most skincare ingredients. In hair and nail products, biotin is often combined with peptides, keratin amino acids, and panthenol for synergistic strengthening effects. For skin, it pairs well with ceramides and niacinamide to enhance barrier repair.

Did You Know?

Biotin was originally called "Vitamin H" from the German words "Haar und Haut" meaning "hair and skin"—reflecting its historic reputation as a beauty vitamin.

How to Use It Safely

  • Typical Concentration: 0.01–0.5% in topical products
  • Frequency: Safe for daily use, particularly in strengthening treatments
  • Pairing: Excellent with ceramides, peptides, niacinamide, and panthenol
  • Caution: Extremely safe; no known contraindications for topical use

Ingredient Source & Sustainability

Biotin used in cosmetics is synthetically produced through fermentation or chemical synthesis, ensuring purity, consistency, and sustainability. It is vegan, cruelty-free, and biodegradable. Synthetic production eliminates the need for animal-derived sources and provides a reliable supply for cosmetic formulations worldwide.