# Blog | Hair Ingredient Lab

Source: https://hairingredientlab.com/blog/

## [Hydrolyzed Silk Protein in Hair Care: The Film Former Explained](2026-10-15-hydrolyzed-silk-protein-hair.md)

Hydrolyzed silk protein coats hair with a smooth film that boosts shine and softness and helps hair hold moisture. What the hydrolysis means, who benefits, and the stiffness risk.

## [Peppermint Oil in Scalp Products: What the Tingle Does and Does Not Mean](2026-10-16-peppermint-oil-scalp-products.md)

Peppermint oil gives scalp products their signature tingle and their growth claims. Separating the one famous mouse study from what human evidence supports, and using the ingredient safely.

## [Rice Water and Rice Protein in Hair Care: Tradition Meets the Lab](2026-10-17-rice-protein-hair-products.md)

Rice water rinses went from village tradition to viral ritual to formulated ingredient. What hydrolyzed rice protein actually does in hair, how it differs from a DIY rinse, and who should skip the trend.

## [Squalane in Hair Products: The Lightweight Oil That Behaves](2026-10-18-squalane-hair-products.md)

Squalane is a stable, skin identical oil that smooths hair without the grease or buildup of heavier oils. How it works, how it compares to silicones and plant oils, and who should use it.

## [Keratin in Hair Products: Strength Claims, Checked](2026-10-19-keratin-hair-products-guide.md)

Keratin is hairs own protein, and products promise to put it back. What keratin ingredients can and cannot do for damaged hair, and who benefits.

## [Silicones in Hair Products Explained: Slip, Shine, and Buildup](2026-10-20-silicones-in-hair-products-explained.md)

Silicones coat the strand to reduce friction, add shine, and protect against heat and humidity. Some rinse away with water, others need shampoo, and that difference explains most good and bad experiences.

## [Aloe Vera in Hair Products: What It Can and Cannot Do](2026-10-21-aloe-vera-in-hair-products-evidence.md)

Aloe is a light humectant and soothing ingredient common in gels and leave ins. It suits fine and wavy hair that heavy creams weigh down.

## [Salicylic Acid in Scalp Products: Exfoliation Chemistry at Low Percentages](2026-10-22-salicylic-acid-scalp-products.md)

Salicylic acid is the oil soluble exfoliant that actually reaches into scalp pores and loosens flake cement. How it works at cosmetic percentages, who it suits, and where its limits sit.

## [Keratin in Hair Products Explained: Film, Feel, and Limits](2026-10-23-keratin-in-hair-products-explained.md)

Keratin ingredients coat and temporarily smooth the hair surface. They support feel and manageability but do not permanently rebuild hair.

## [Glycerin in Hair Products: Humectant Help in Dry and Humid Air](2026-10-24-glycerin-in-hair-products.md)

A practical, honest guide to what glycerin does in hair products in dry and humid weather, with a simple starting point, the mistakes to avoid, and clear signs for when to change course.

## [Sulfates in Shampoo, Explained Without the Fear](2026-10-25-sulfates-in-shampoo-explained.md)

Sulfates are strong, effective cleansers that remove oil and build up thoroughly. They are too much for some dry, curly, or colour treated hair when used daily, and perfectly fine for oily scalps and occasional deep cleans. Context, not chemistry panic, decides.

## [Niacinamide in Scalp Products, Explained](2026-10-26-niacinamide-in-scalp-products-explained.md)

Niacinamide, a form of vitamin B3, has moved from face serums into scalp tonics and shampoos. This explainer looks at what it is claimed to do for the scalp, what evidence supports, and how it is used.

## [Panthenol in Hair Products, Explained Without the Halo](2026-10-30-panthenol-in-hair-products-explained.md) [Cetrimonium Chloride: The Workhorse Hiding in Your Conditioner](2026-10-30-cetrimonium-chloride-in-conditioner.md) [Squalane in Hair Products, Explained: The Lightweight Oil](2026-10-29-squalane-in-hair-products-explained.md) [Dimethicone in Hair Products, Explained Without the Panic](2026-10-29-dimethicone-in-hair-products-explained.md) [Panthenol in Hair Products, Explained: The Moisture Magnet](2026-10-28-panthenol-in-hair-products-explained.md) [Ceramides in Hair Products, Explained: Mortar for the Hair Shaft](2026-10-28-ceramides-in-hair-products-explained.md) [Squalane in Hair Products, Explained: Lightweight Oil Without the Grease](2026-10-27-squalane-in-hair-products-explained.md) [Glycerin in Hair Products, Explained: The Humectant That Depends on the Weather](2026-10-27-glycerin-in-hair-products-explained.md) [Ceramides in Hair Products, Explained](2026-10-26-ceramides-in-hair-products-explained.md) Ceramides are lipids that help hold the hair cuticle together, and they appear in products aimed at damaged, dry, and chemically treated hair. This explainer covers what they do, where they sit on a label, and who benefits. [Panthenol in Hair Products: What the Lab Evidence Shows](2026-10-25-panthenol-in-hair-products.md) Panthenol, the provitamin of vitamin B5, is a humectant that draws water into the hair shaft and forms a light film. It improves feel, shine, and combing ease modestly, and it is one of the better tolerated ingredients in hair care. [Silicones in Hair Products Explained: Smoothness Without the Myths](2026-10-24-silicones-in-hair-products-explained.md) A practical, honest guide to what silicones do in hair products and when they help, with a simple starting point, the mistakes to avoid, and clear signs for when to change course. [Panthenol in Hair Products: What This Ingredient Actually Does](2026-10-23-panthenol-in-hair-products.md) Panthenol is a humectant that helps hair feel smoother and hold moisture, commonly used in conditioners and leave in products. [Biotin in Hair Products: What Topical Biotin Can and Cannot Do](2026-10-22-biotin-in-hair-products.md) Biotin headlines shampoos and masks as if it feeds hair from the outside. The lab view: biotin matters as a nutrient, deficiency is rare, and rinsed off products deliver little. Separating the vitamin's real role from its label fame. [Hydrolyzed Protein in Hair Products: Sizes, Effects, and Overload Signs](2026-10-21-protein-in-hair-products-hydrolyzed.md) Hydrolyzed proteins are chopped small enough to sit in and on damaged hair, temporarily strengthening it. Too much leaves hair stiff and brittle feeling. [Glycerin in Hair Products: Humectant Help in the Right Climate](2026-10-20-glycerin-in-hair-products.md) Glycerin draws water toward hair and can soften and reduce frizz in humid air, but in very dry air it can leave hair feeling less smooth. Climate and formula decide whether it helps you. [Aloe Vera in Hair Products: What It Actually Does](2026-10-19-aloe-vera-hair-products.md) Aloe vera shows up in everything from shampoos to styling gels. A lab look at its humectant and soothing claims, concentrations, and best uses. [Ceramides in Hair Products: What They Repair and What They Cannot](2026-10-18-ceramides-hair-products-guide.md) Ceramides are the lipids that hold the hair cuticle together, and products now add them back. What ceramide formulas actually do for damaged hair, and where their limits sit. [Panthenol in Hair Products: The Moisture Binder With a Film Habit](2026-10-17-panthenol-hair-products.md) Panthenol, provitamin B5, is in everything from budget shampoo to salon masks. What it measurably does inside and on the hair shaft, where it helps most, and where the claims outrun the chemistry. [Jojoba Oil in Hair Products: The Wax Ester That Behaves Like Sebum](2026-10-16-jojoba-oil-hair-products.md) Jojoba is not technically an oil, and that technicality explains everything about how it behaves on hair and scalp: stable, light, non greasy, and closer to the skin's own sebum than any true oil. [Squalane in Hair Products: What It Does and Who It Suits](2026-10-15-squalane-hair-products.md) Squalane is a stable, lightweight emollient that mimics part of your skin's own oil. In hair care it smooths and adds shine without the grease of heavier oils, with limits worth knowing. [Ceramides in Hair Products: What They Actually Do](2026-10-14-ceramides-hair-products.md) Ceramides are lipids that help hair hold moisture and resist breakage. What ceramides do in conditioners and leave ins, who benefits most, and how to spot a meaningful amount on a label. [Panthenol in Hair Products: What Pro Vitamin B5 Actually Does](2026-10-13-panthenol-hair-ingredient-guide.md) Panthenol shows up in conditioners, masks, and styling products everywhere. What it does for moisture and strength, and who benefits most. [What does glycerin actually do in hair products?](2026-10-12-glycerin-hair-products.md) Glycerin is in everything from leave-ins to gels. What this humectant actually does for hair moisture, when it backfires in dry air, and where the marketing overreaches. [What does panthenol (pro-vitamin B5) actually do in hair products?](2026-10-11-panthenol-hair-products.md) Panthenol is in half the conditioners on the shelf. What pro-vitamin B5 actually does for hair moisture, thickness, and shine, and where the marketing overreaches. [What does caffeine actually do in hair products?](2026-10-10-caffeine-hair-products.md) Caffeine in shampoos and serums promises to energize follicles. What the lab research actually shows, how much caffeine reaches the scalp, and where the marketing overreaches. Hair Ingredient Lab blog Practical notes on hair product ingredients, label reading, and routine decisions. [What does castor oil actually do in hair products?](2026-10-09-castor-oil-hair-products.md) Castor oil is marketed as a growth miracle, but the evidence says something narrower. What ricinoleic acid does for hair, the thickness problem, and what the growth claims get wrong. [What does niacinamide actually do in scalp products?](2026-10-08-niacinamide-scalp-products.md) Niacinamide migrated from skincare to scalp serums fast. What the ingredient does at the scalp level and what the evidence supports. [What does aloe vera actually do in hair products?](2026-10-06-aloe-vera-hair-products.md) October 6, 2026 Aloe is a water-rich humectant, not a repair ingredient, and most products contain too little to matter. The chemistry, the concentration problem, and how to read the label. [Rosemary extract in hair products: what the research actually says](2026-10-05-rosemary-extract-hair-products.md) October 5, 2026 Two small human trials suggest rosemary oil can support hair density, but the products rarely match the trial preparations. What the research shows, the concentration problem, and how to evaluate a rosemary product. [What does shea butter actually do in hair products?](2026-10-04-shea-butter-hair-products.md) October 4, 2026 Shea butter is in everything from conditioners to edge controls. What it actually does for hair, where it sits in a formula, and when it causes more problems than it solves. [What does argan oil actually do in hair products?](2026-10-03-argan-oil-hair-products.md) October 3, 2026 Argan oil is one of the most common oils in hair care, and one of the least understood. What the research supports, where it sits in a formula, and what the marketing gets wrong. [What does caffeine actually do in hair products?](2026-10-02-caffeine-hair-products.md) October 2, 2026 Caffeine is marketed as a growth stimulant, but the evidence is thin and mostly from lab dishes, not scalps. What it can do in a formula and what it cannot. [What does salicylic acid actually do in scalp products?](2026-10-01-salicylic-acid-scalp-products.md) October 1, 2026 Salicylic acid dissolves oil and dead skin inside follicles, which makes it the exfoliant of choice for flaky, oily scalps. How it works, who it suits, and where it can backfire. [What does niacinamide actually do in hair products?](2026-09-30-niacinamide-hair-products.md) September 30, 2026 Niacinamide is a form of vitamin B3 showing up in scalp serums and shampoos. What the evidence says about scalp barrier support, oil balance, and what it cannot do for hair. [What does glycerin actually do in hair products?](2026-09-29-glycerin-hair-products.md) September 29, 2026 A humectant that pulls moisture from the air into hair. What it is, when it helps, and the dry-air conditions where it backfires. [What does behentrimonium chloride actually do in hair products?](2026-09-28-behentrimonium-chloride.md) September 28, 2026 A positively charged conditioner that binds to damaged hair and cuts detangling friction. What it is, what it is not, and who benefits most. [What does panthenol actually do in hair products?](2026-09-27-panthenol-hair-products.md) September 27, 2026 Panthenol is pro-vitamin B5, a humectant that penetrates the hair shaft and improves moisture retention. What it does, how to spot meaningful levels on a label, and who benefits most. [What do hydrolyzed proteins actually do in hair products?](2026-09-26-hydrolyzed-proteins-hair.md) September 26, 2026 Hydrolyzed keratin, wheat, and silk temporarily patch damaged hair. What the proteins do, how to read them on a label, and the protein overload problem. [What do ceramides actually do in hair products?](ceramides-hair-products.md) September 25, 2026 Ceramides fill gaps in a roughened cuticle, reducing friction and improving shine. Which hair types benefit most, and how to spot a meaningful concentration on the label. [What do sulfates actually do in shampoo?](sulfates-shampoo-what-they-do.md) September 24, 2026 SLS and SLES are strong cleansers, not villains. What sulfates do, when they are too much for a dry or sensitive scalp, and how to read gentler surfactant labels without falling for marketing. [Do silicones really cause buildup?](silicone-buildup-clarify.md) September 22, 2026 Some silicones wash out easily and some do not. Buildup happens when non-water-soluble silicones layer up over weeks without a clarifying wash, not because every product listing a cone on the label is a problem.