Nothing to hide: how we formulated the Daily Repair Shampoo
Every decision. Every trade-off. Every rejection. Before we publish the full ingredient list — here's the thinking behind it.
Most brands publish an ingredient list because they're legally required to. We publish ours because hiding it would contradict everything LUA stands for. But an ingredient list alone — a column of INCI names in small print — isn't transparency. It's compliance.
Real transparency is explaining the thinking. Why this ingredient and not that one. What we considered and set aside. What the Egyptian water data required that a standard formula wouldn't include. What we refused to compromise on, and what genuine trade-offs we made.
The full INCI list for the Daily Repair Shampoo will be published shortly. This article is the thinking behind it — and arguably the more useful document.
Where the formulation started: four non-negotiables
Every formulation decision in the Daily Repair Shampoo traces back to four objectives that were locked before a single ingredient was selected.
One: Address Egyptian hard water directly. Cairo's tap water regularly exceeds 300 ppm mineral content — classified as very hard by international standards. Any formula that didn't include an active chelating system was eliminated from consideration before evaluation began. This wasn't a feature to add. It was the baseline requirement.
Two: pH balance at 5.5. The natural pH of a healthy scalp and the optimal pH for hair cuticle function. Hard water is alkaline — typically between pH 7 and 8.5. A shampoo used in hard water conditions that isn't deliberately pH-adjusted to counter that alkalinity leaves hair with a disrupted pH after every wash. We formulated to 5.5 and we hold it there.
Three: Scalp-safe for daily use. The formula needed to cleanse thoroughly enough to remove mineral accumulation and daily sebum — while being gentle enough for women who wash daily, including those with covered hair where scalp buildup accelerates faster than in open-air conditions. Not deep-cleanse performance once a week. Daily performance, daily gentleness.
Four: Actives at functional concentrations. Keratin and argan oil appear in this formula as working ingredients — not as label claims. If an ingredient isn't present at a concentration where it delivers measurable benefit to the hair fiber, it doesn't belong in the formula. It belongs in the marketing copy of a different brand.
The surfactant decision
The cleansing system is the heart of any shampoo formula — and the decision with the most downstream consequences for scalp health, hair condition, and hard water performance.
We evaluated three surfactant categories:
Sulfate-based surfactants — Sodium Lauryl Sulfate and Sodium Laureth Sulfate. Highly effective cleansers with strong hard water performance, but stripping at the concentrations required for thorough mineral deposit removal. Repeated daily use in Egyptian conditions would compromise scalp lipid barrier integrity over time. Eliminated.
Amphoteric and mild synthetic surfactants — a category that includes several coconut-derived options with gentler profiles than sulfates and comparable or better hard water performance when properly formulated. This is where the Daily Repair Shampoo's primary cleansing system sits. The specific selections were made based on three criteria: lather quality in hard water, rinse-off completeness, and scalp compatibility at daily-use frequency.
Ultra-mild surfactant systems — evaluated and eliminated for Egyptian conditions specifically. At 300+ ppm mineral content, surfactant systems below a certain cleansing threshold cannot remove mineral accumulation effectively. A formula too mild to address hard water is not a gentle formula for Egyptian conditions — it's an incomplete one.
The chelation decision
The chelating system required the most Egypt-specific thinking of any formulation decision.
Chelating agents appear in many cosmetic formulas at low concentrations — primarily as formula stabilizers, preventing mineral contamination from manufacturing equipment from affecting the product's shelf stability. That's a different application than active hard water chelation, and it requires meaningfully different concentrations.
We formulated the chelating system for active mineral removal at Egyptian water hardness levels — not for formula stabilization alone. The difference matters.
A formula with chelating agents present for stability purposes will partially address hard water exposure. A formula with chelating agents at active chelation concentrations will address it systematically. This decision adds formulation cost. It's a cost we made deliberately and without apology, because the alternative — a chelating system at stabilization-only concentrations, marketed as hard water protection — is exactly the kind of gap between claim and delivery that LUA exists to close.
The conditioning actives decision
Two actives were selected for the Daily Repair Shampoo: hydrolyzed keratin and argan oil. Both decisions came with concentration commitments.
Hydrolyzed keratin was selected because the damage pattern LUA formulated against — mineral buildup compounding structural hair damage over time — is a protein-level problem. Hard water mineral deposits disrupt the keratin structure of the hair shaft. Replenishing hydrolyzed keratin protein at the cleansing stage addresses this at the source rather than masking it with surface conditioning agents.
Argan oil was selected for its fatty acid and vitamin E profile — specifically for the combination of moisture support and cuticle surface conditioning that performs well across the range of Egyptian hair textures. It was selected at a concentration where it delivers measurable conditioning benefit during the wash and rinse cycle — not at a trace level positioned as a hero ingredient.
What we chose not to use: silicones. The decision was straightforward in the context of Egyptian hard water. Silicone conditioning agents create a film on the hair shaft. In conditions where the hair shaft is already managing mineral accumulation, adding a film-forming agent compounds the buildup burden rather than addressing it. The conditioning approach in this formula works with the chelation system — not against it.
The preservation decision
A water-based formula without an effective preservative system is a microbial risk. This is not a clean beauty debate — it's chemistry. Water supports microbial growth. A formula that contains water must be preserved.
We chose a preservation system based on three criteria: documented safety profile at cosmetic-use concentrations, broad-spectrum efficacy against bacteria, yeast, and mold, and stability in a pH 5.5 formula environment.
We did not choose to use parabens — not because we consider them categorically unsafe at cosmetic concentrations, but because alternative preservation systems with equivalent efficacy and strong dermatological review data are available. We used the better-documented option, not the more marketable-sounding one.
We also chose not to rely on essential oils or botanical extracts as primary preservatives. Some brands use these as marketing-friendly preservation claims. Their efficacy profiles are inconsistent, their stability in water-based formulas is limited, and for a formula prioritizing scalp health across diverse users, introducing potential sensitizers as preservatives was not an acceptable trade-off.
The fragrance decision
The Daily Repair Shampoo contains no added fragrance.
This decision was not a positioning choice. It was a scalp health choice. Fragrance compounds — including those derived from natural sources — are among the most common triggers of scalp sensitivity and contact dermatitis. For a formula that prioritizes scalp health, particularly for covered hair where the scalp microenvironment is less ventilated and more reactive, fragrance removal was non-negotiable from the first formulation brief.
A formula that smells like clean hair because it performs the way it should — not because a fragrance compound has been added to create that association — is the standard we held.
What comes next
The full INCI ingredient list for the Daily Repair Shampoo — with plain-language explanations of every compound, in order of concentration — will be published here as a companion to this article once formulator verification is complete.
In the meantime, the formulation philosophy above is the complete picture of every significant decision made in building this formula. If you have questions about a specific decision that isn't addressed here, the answer isn't proprietary. Ask us — and we'll answer with the same level of detail you've read above.
