Haircare terms without the jargon.

Amodimethicone

A conditioning silicone that can deposit more on damaged or porous parts of the hair, improving slip and softness while still needing buildup-aware cleansing.

Amphoteric surfactant

A cleanser that can carry different charge behavior depending on formula pH, often used to make shampoo blends milder and creamier.

Anagen phase

The active growth phase of the hair cycle, when a follicle is making a hair fiber; different from length retention after growth.

Androgenetic alopecia

A genetic pattern hair-loss condition where follicles miniaturize over time; it is medical hair loss, not dryness or breakage.

Anionic surfactant

A negatively charged cleanser family that removes oil efficiently. Sulfates are anionic surfactants, though not all anionics behave equally.

Bond builders

Treatments designed to support or reconnect internal hair bonds after chemical or heat damage. They are different from conditioners, which mainly improve surface feel and manageability.

Carrier oil

A base oil used to dilute essential oils before skin or scalp contact; examples include jojoba, argan, coconut, and sunflower.

Chelating agent

An ingredient that binds metal minerals such as calcium, magnesium, copper, or iron so they can be rinsed away from hair or formula water.

Clarifying Shampoo

A deep-cleansing shampoo designed to strip product buildup, hard-water minerals, and excess oil. Used once a month or before color services — never daily, which over-strips. Some clarifying shampoos are sulfate-free; others use targeted sulfates for a reset.

Co-wash

A conditioner-style wash that cleans gently while preserving softness, often used by curly or coily hair routines between shampoo days.

Cocamidopropyl betaine

A coconut-derived amphoteric co-surfactant often used to make shampoos milder, creamier, and less stripping than sulfate-only systems.

Conditioner

A rinse-out or leave-in product built to improve slip, softness, manageability, and cuticle feel after cleansing or styling stress.

Cuticle

The outermost layer of the hair strand — a scaly sheath that, when healthy, lies flat like fish scales to reflect light. Sulfates and heat lift the cuticle; moisture and protein help it close. Cuticle health determines shine, smoothness, and color retention.

Cyclopentasiloxane

A volatile silicone that helps formulas spread smoothly and then evaporates more readily than heavier silicones, leaving a lighter finish.

Dimethicone

A common non-volatile silicone used for slip, shine, frizz control, and heat-styling feel. It can build up when layered without enough cleansing.

Disulfide bond

A strong sulfur-to-sulfur bond inside hair keratin that helps determine strength, elasticity, and curl pattern. Chemical services and severe heat can disrupt these bonds.

EDTA

A common chelating ingredient used to bind metal ions in formulas and on hair, helping reduce mineral interference and improve product stability.

Essential oil

A concentrated aromatic plant extract used at low percentages; it is not a carrier oil and can irritate the scalp when used neat.

Fatty alcohol

A conditioning alcohol such as cetyl, stearyl, or cetearyl alcohol that gives slip and creaminess. It is not the drying alcohol people usually worry about.

Glycerin

A strong humectant that attracts water and helps hair feel flexible, but can contribute to frizz in high humidity or feel less helpful in very dry air.

Hard water

Water high in minerals such as calcium and magnesium, which can leave deposits on hair and make color look dull, brassy, rough, or hard to condition.

Heat protectant

A styling product that reduces heat-styling damage by forming a thin film, slowing water loss, improving slip, or buffering thermal transfer between the tool and the hair fiber.

Humectant

An ingredient that pulls water from the air into the hair shaft. Glycerin, hyaluronic acid, and panthenol are common humectants. They add moisture and pliability, though in very dry or very humid environments the behavior can reverse.

Hyaluronic acid

A water-binding humectant used in haircare for surface hydration and cushion. It can help hair feel softer but is not structural repair.

Hydrolyzed protein

Protein broken into smaller pieces so it can sit on or interact with the hair surface, supporting strength, feel, and temporary damage management.

Keratin

The structural protein that makes up most of the hair shaft and gives the strand strength, elasticity, and shape. High heat can permanently denature keratin.

Lipid barrier

The protective oil-like layer on the hair fiber and scalp surface that helps reduce water loss, friction, and irritation. Over-cleansing and heat can deplete it.

Minoxidil

A hair-loss medication used for some pattern hair-loss cases; it sits in the medical treatment lane, not the cosmetic oil lane.

Nonionic surfactant

A cleanser with no charge, often used for mild cleansing, solubilizing oils, or supporting sulfate-free surfactant blends.

Panthenol

Pro-vitamin B5, a conditioning humectant used for softness, flexibility, and surface feel in shampoos, conditioners, leave-ins, and scalp products.

pH-balanced

A formula designed to sit in a hair- and scalp-appropriate acidity range, helping reduce cuticle swelling and support a smoother hair surface.

Porosity

How easily hair absorbs and retains moisture. Low-porosity hair sheds water; high-porosity hair soaks it up but loses it quickly. Porosity drives product choice — low-porosity needs humectants and heat; high-porosity needs protein and sealing oils.

Protein overload

A routine imbalance where repeated protein-heavy products leave hair feeling stiff, rough, brittle, or straw-like instead of stronger.

Sebum

The natural oil your scalp produces to protect skin and hair. Sebum travels down the hair shaft on straight hair but struggles to make the journey through curly or coily textures. Aggressive cleansers trigger the scalp to overproduce sebum as defense.

Shampoo pH

The acidity or alkalinity of a shampoo. Lower, mildly acidic formulas are usually gentler for the cuticle than alkaline formulas.

Silicone

A family of smoothing ingredients (dimethicone, amodimethicone, cyclomethicone) that coat the hair to block frizz and add slip. Not inherently bad, but non-water-soluble silicones need clarifying cleansers to fully remove — otherwise they build up over time.

Sodium Laureth Sulfate (SLES)

A milder cousin of SLS created through ethoxylation. Still a sulfate and still strips hair, but gentler on the scalp than SLS. Most "regular" shampoos today use SLES rather than SLS; truly sulfate-free formulas avoid both.

Sodium Lauryl Sulfate (SLS)

The harsher of the two common shampoo sulfates. A strong surfactant and known skin irritant used since the 1930s. Creates rich lather but penetrates the skin, causing dryness and irritation for many users.

Sulfate

A family of cleansing agents (surfactants) used in shampoo to cut through oil and create lather. The two most common are SLS and SLES. Effective cleaners, but aggressive enough to strip natural scalp oils — a concern for curly, color-treated, and dry hair.

Surfactant

Any cleansing agent that lowers the surface tension between oil and water so it can be rinsed away. Surfactants are the workhorses of shampoo. Some strip aggressively (sulfates); others clean gently (cocamidopropyl betaine, decyl glucoside).

Telogen effluvium

A diffuse shedding pattern that can follow stress, illness, rapid weight loss, postpartum shifts, medication changes, or nutrition issues.

Water-soluble silicone

A silicone modified to disperse or rinse more easily in water, often easier for low-buildup or curl routines than classic non-volatile silicones.