Application · Sensitive skin & redness
Low-irritation, fragrance-free and minimal formulas for sensitive, reactive and redness-prone skin. Developed by CSL formulation scientists.
Guires Cosmetic Science Lab
At Guires Cosmetic Science Lab, CSL formulation chemists develop sensitive skin formulations, from fragrance-free moisturisers to soothing serums with colloidal oatmeal and centella, with tolerance proven by HRIPT, sting testing and dermatologist-assessed in-use studies. With more than 10 years of experience, the team develops minimal formulas that visibly reduce redness and discomfort using an evidence-based approach.
Start your project with Guires CSLWhat shoppers look for now
Many people describe their skin as sensitive, and look for products that will not sting or redden.
Fragrance-free, minimal formulas are the default choice for sensitive skin.
Shoppers want proof the product was tested on sensitive skin, not just “dermatologically tested”.
The science
Sensitive skin usually combines a weaker barrier with easily triggered nerves and inflammation. CSL formulation scientists formulate to support the barrier and remove triggers.
Soothing actives
Colloidal oatmeal, licorice and postbiotic lysates have controlled trials showing reduced redness, itch and irritation. We combine them with barrier support.
Barrier support
A stronger barrier lets fewer irritants in. Ceramides, glycerin and ectoin all have randomised trials showing better barrier function or tolerance, with glycerin stinging less than urea.
Key actives
Chosen for each market’s ingredient rules and your target cost. Tap an ingredient marked → to read the published evidence.
Claims & evidence
The claims brands ask for most, the study that supports each one, and how strong that evidence is.
| Claim brands ask for | Typical evidence | Evidence tier |
|---|---|---|
| “Suitable for sensitive skin” | In-use safety on a sensitive-skin panel | Tier 2 |
| “Hypoallergenic” | HRIPT and allergen screen | Tier 2 |
| “Reduces the look of redness” | Chromameter | Tier 3 |
| “Dermatologically tested” | Patch test and in-use | Tier 2 |
Clinical evidence
Peer-reviewed human studies behind the actives and approaches on this page. Each links to its record.
Randomised, double-blind, active-controlled · children with eczema · 3 weeks
The oatmeal cream matched the prescription barrier cream on eczema improvement, with similar tolerability.
Manufacturer-sponsored.
Lisante TA et al. J Dermatolog Treat 2017;28(7):659–667 · PMID 28366039
Controlled three-group trial · 90 adults with eczema · 2 weeks
The 2% gel reduced redness, swelling and itch more than the 1% gel.
Saeedi M et al. J Dermatolog Treat 2003;14(3):153–157 · PMID 14522625
Randomised, double-blind, placebo-controlled · 75 people with atopic dermatitis · 30 days
Reduced eczema severity (P=0.0044), itch and sleep loss, and lowered S. aureus colonisation vs placebo.
Gueniche A et al. Br J Dermatol 2008;159(6):1357–1363 · PMID 18795916
Double-blind, randomised · 24 adults with dry skin · 28 days + 7-day follow-up
Better hydration, lower TEWL and improved skin pH at every time point, maintained 7 days after stopping.
Lueangarun S et al. Dermatol Ther 2019;32(6):e13090 · PMID 31585489
Randomised, double-blind · 197 adults with atopic dermatitis · 30 days
Both relieved dryness equally; the glycerin cream caused less stinging (10% vs 24% moderate–severe).
Lodén M et al. Acta Derm Venereol 2002;82(1):45–47 · PMID 12013198
Randomised, double-blind, intra-individual, multicentre · 65 adults · 28 days
Efficacy and tolerability equivalent to the active comparator on eczema score, global assessment and itch.
Marini A et al. Skin Pharmacol Physiol 2014;27(2):57–65 · PMID 23949258
These are published studies on ingredients, methods and routines, not on products we have made. A finished product needs its own testing before a claim goes on pack, and we design that study with you. See the full evidence library
"Sensitive skin" claims are cosmetic. Claims to treat rosacea or dermatitis are medicinal and need a different route.
Concept spotlight
Example concepts to show the range. Every project starts from your own brief, and the finished formula belongs to you.
A minimal-ingredient cream with ceramides and oat for reactive skin.
A calming serum that reduces the look of redness.
A non-foaming cleanser that leaves the barrier intact.
Sectors
Stay ahead in sensitive skin & redness with regulation updates, the latest research, ingredient spotlights, recalls and market trends, written by the Guires CSL formulation, testing, clinical and regulatory teams.
Explore market insights
FAQ
It has no legal definition. We support it with HRIPT data and a formula free of common allergens, and word it carefully.
We recruit panels with self-declared or stinging-test-confirmed sensitive skin and run in-use studies under dermatologist supervision.
They can, but fragrance is a common trigger. Most sensitive ranges are fragrance-free.
You do. We sign an NDA before you share your brief, and the formula and technical file are handed over at the end of the project.
Every sensitive skin & redness project at Guires CSL runs inside an ISO 9001 certified quality system, with documented methods, calibrated instruments, traceable raw materials and reviewed reports, so the results behind your product can be checked and defended.
Guires CSL quality & accreditations
In their words
“Our minimalist formula is free from fragrance and common sensitisers, with no compromise on texture or stability.”
“Dermatological tolerance testing gave us credible evidence for our low-irritation positioning.”
“Swapping potential irritants for gentler alternatives and rebalancing the emulsion kept viscosity and stability within specification.”
“Instrumental redness measurements and a tolerance study gave us quantified data that fed directly into our claims.”
Insights
Guidance from our formulation, testing and regulatory teams on the topics this page covers.
Patch tests, in-use studies and panel sizes, and how wording differs between markets.
Read articleThe ingredient themes shaping US skin-care briefs, and what each one means for formulation and claims.
Read articleLicorice is the most studied botanical for uneven tone, and its licochalcone A is a well-known soothing ingredient. The trials are small, so here is an honest look at…
Read articleFrom the CSL bioscience lab
Start a project
Our formulation chemists, testing scientists and regulatory specialists work alongside your team, from the first brief to a market-ready product. Bring a brief, a benchmark or just an idea: a scientist will reply within one working day with next steps and an indicative scope.
