Application · Anti-ageing & wrinkles

Anti-ageing products with measurable results.

Q: How long does an anti-ageing study take?

Most instrumental studies run 8 to 12 weeks; claims about collagen or deep wrinkles often need 12 to 24 weeks.

Q: Can you use retinol in products for the EU?

Yes, within the EU limits introduced for retinol and retinyl esters in face and body products, with the required labelling.

Q: Is bakuchiol as good as retinol?

One randomised trial found similar results on wrinkles and pigmentation with less irritation. We use it where gentleness matters.

Q: Who owns the formula?

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.

Formulas for fine lines, firmness and elasticity, built on proven actives and backed by instrumental evidence. Developed by CSL formulation scientists.

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Guires Cosmetic Science Lab

Anti-ageing Product Formulations from Guires CSL

At Guires Cosmetic Science Lab, CSL formulation chemists develop anti-ageing product formulations, from retinol and peptide serums to night creams and daily SPF, with results proven by 3D skin imaging, Cutometer elasticity and expert grading over 8 to 12 weeks. With more than 10 years of experience, the team has developed formulas that visibly improve fine lines, firmness and skin texture using an evidence-based approach.

Start your project with Guires CSL

What shoppers look for now

01Visible, measured

Shoppers want results they can see in weeks, and brands need instrumental data to put numbers on pack.

02Gentle efficacy

Demand is growing for anti-ageing that works without the irritation of strong retinoids or acids.

03Prevention

Younger shoppers start early, with daily SPF and antioxidants to slow visible ageing.

The science

How skin ages, and what we formulate against.

Visible ageing comes from within (collagen loss over time) and from outside (UV, pollution). We target both.

CSL anti-ageing science: smooth, radiant facial skin with magnified skin layers showing hydration, barrier and firmness, and a serum dropper

Collagen & wrinkles

Smoother skin, measured in weeks.

Retinoids, vitamin C and niacinamide are among the best-studied cosmetic actives for fine lines, with vehicle-controlled trials showing improvement over 12 to 24 weeks. Bakuchiol offers a gentler alternative with comparable results in a head-to-head trial.

Ingredients CSL scientists work with

Retinol & retinalBakuchiolVitamin CNiacinamidePeptidesLow-weight hyaluronic acid

How CSL proves it works

Wrinkle imaging3D fringe projection or replica analysis
CutometerFirmness and elasticity
Expert gradingPhoto-numeric scales over 8–24 weeks

Published evidenceKafi 2007 · retinol Bissett 2005 · niacinamide Humbert 2003 · vitamin C Dhaliwal 2019 · bakuchiol

Prevention

The best anti-ageing is daily SPF.

In a 4.5-year randomised trial, daily sunscreen users showed 24% less skin ageing. Pairing daily SPF with antioxidants and hydration makes prevention part of the routine.

Ingredients CSL scientists work with

Broad-spectrum UV filtersVitamin EFerulic acidNiacinamideHyaluronic acid

How CSL proves it works

SPF and UVAISO 24444 and ISO 24443
HydrationCorneometer over hours and weeks
ToleranceSensitive-skin panels

Published evidenceHughes 2013 · daily sunscreen Pavicic 2011 · hyaluronic acid

Key actives

Ingredients we formulate with.

Chosen for each market’s ingredient rules and your target cost. Tap an ingredient marked → to read the published evidence.

Retinol & retinal Bakuchiol Peptides Vitamin C Niacinamide Hyaluronic acid AHAs Ceramides

Claims & evidence

From the claim to the proof.

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
“Reduces the appearance of fine lines”	3D skin imaging over 28–56 days	Tier 3
“Visibly firmer skin”	Cutometer elasticity	Tier 3
“Suitable for sensitive skin”	In-use safety on a sensitive panel	Tier 2
“Smoother skin in 7 days”	Consumer perception study	Tier 1

Clinical evidence

What the published trials show.

Peer-reviewed human studies behind the actives and approaches on this page. Each links to its record.

Randomised controlled trialAnti-ageing · retinol

0.4% retinol lotion vs vehicle

Randomised, double-blind, vehicle-controlled · 36 older adults · 24 weeks

Fine wrinkling improved significantly vs vehicle (score change −1.64 vs −0.08, P<.001), with increased glycosaminoglycans and procollagen I.

Kafi R et al. Arch Dermatol 2007;143(5):606–612 · PMID 17515510

Randomised controlled trialAnti-ageing · niacinamide

5% niacinamide vs vehicle, split-face

Double-blind, split-face · 50 women · 12 weeks

Significant reductions in fine lines, wrinkles, spots, red blotchiness and sallowness, and improved elasticity, vs the vehicle side.

Bissett DL et al. Dermatol Surg 2005;31(7 Pt 2):860–865 · PMID 16029679

Randomised controlled trialAnti-ageing · vitamin C

5% vitamin C cream vs vehicle

Double-blind, randomised, split-site · 20 women · 6 months

Clinical photoageing score improved from 6.7 to 4.4 on the treated side, with denser skin microrelief and fewer deep furrows.

Humbert PG et al. Exp Dermatol 2003;12(3):237–244 · PMID 12823436

Randomised controlled trialAnti-ageing · bakuchiol

0.5% bakuchiol vs 0.5% retinol

Randomised, double-blind · 44 adults · 12 weeks

Both reduced wrinkle area and hyperpigmentation with no significant difference; bakuchiol caused less scaling and stinging.

Dhaliwal S et al. Br J Dermatol 2019;180(2):289–296 · PMID 29947134

Randomised controlled trialHydration · hyaluronic acid

0.1% hyaluronic acid creams (50–2000 kDa) vs vehicle

Randomised, controlled, intra-individual · 76 women · 60 days

All molecular weights improved hydration and elasticity vs vehicle; the low weights (50 and 130 kDa) also reduced wrinkle depth.

Pavicic T et al. J Drugs Dermatol 2011;10(9):990–1000 · PMID 22052267

Randomised controlled trialPhotoageing · daily sunscreen

Daily broad-spectrum SPF 15+ vs discretionary use

Randomised community trial, blinded assessment · 903 adults · 4.5 years

Daily users showed 24% less skin ageing (relative odds 0.76) than discretionary users.

Hughes MC et al. Ann Intern Med 2013;158(11):781–790 · PMID 23732711

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

Cosmetic or drug?

Anti-ageing claims stay cosmetic when they describe appearance. Claims about changing skin structure or collagen production can push a product towards medicine rules in some markets.

Concept spotlight

Ideas we can take from bench to shelf.

Example concepts to show the range. Every project starts from your own brief, and the finished formula belongs to you.

Night · Retinoid

Encapsulated retinal night cream

A slow-release retinal in a ceramide cream for visible results with less irritation.

Gentle · Botanical

Bakuchiol and peptide serum

A retinol-free serum for sensitive skin and daytime use.

Day · Antioxidant

Vitamin C day fluid SPF 30

A stable vitamin C derivative with daily broad-spectrum protection.

Sectors

Where this applies.

Market insights from Guires CSL scientists

Stay ahead in anti-ageing & wrinkles 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

Guires CSL scientists reviewing cosmetic market research and regulatory updates

FAQ

Anti-ageing & wrinkles questions.

How long does an anti-ageing study take?

Most instrumental studies run 8 to 12 weeks; claims about collagen or deep wrinkles often need 12 to 24 weeks.

Can you use retinol in products for the EU?

Yes, within the EU limits introduced for retinol and retinyl esters in face and body products, with the required labelling.

Is bakuchiol as good as retinol?

One randomised trial found similar results on wrinkles and pigmentation with less irritation. We use it where gentleness matters.

Who owns the formula?

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.

Guires CSL quality, compliance and safety

Every anti-ageing & wrinkles 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

Guires CSL analyst checking cosmetic samples under a microscope

In their words

What clients say.

“Encapsulation and a targeted antioxidant system kept our key anti-ageing actives at full potency throughout stability testing.”

Sophie MartinTechnical Director · France

“By refining the pH window and phase addition order, their team resolved our active-compatibility challenges and kept every ingredient within specification.”

Rachel BennettSenior Formulation Scientist · USA

“Instrumental wrinkle and firmness measurements within their clinical design gave us quantified evidence for our anti-ageing claims.”

James WilsonHead of Clinical Affairs · UK

“Running preservative efficacy, stability and packaging compatibility testing as one integrated plan significantly shortened our development timeline.”

Anika SharmaQA/QC Manager · India

Insights

Tested at the Guires R&D Innovation Centre.

Start a project

Create your next product with CSL.

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.

Create with us

Anti-ageing products with measurable results.

Anti-ageing Product Formulations from Guires CSL

How skin ages, and what we formulate against.

Smoother skin, measured in weeks.

Ingredients CSL scientists work with

How CSL proves it works

The best anti-ageing is daily SPF.

Ingredients CSL scientists work with

How CSL proves it works

Ingredients we formulate with.

From the claim to the proof.

What the published trials show.

0.4% retinol lotion vs vehicle

5% niacinamide vs vehicle, split-face

5% vitamin C cream vs vehicle

0.5% bakuchiol vs 0.5% retinol

0.1% hyaluronic acid creams (50–2000 kDa) vs vehicle

Daily broad-spectrum SPF 15+ vs discretionary use

Ideas we can take from bench to shelf.

Encapsulated retinal night cream

Bakuchiol and peptide serum

Vitamin C day fluid SPF 30

Where this applies.

Market insights from Guires CSL scientists

Anti-ageing & wrinkles questions.

Guires CSL quality, compliance and safety

What clients say.

Related reading.

Cosmeceuticals in the UAE: cosmetic or drug?

US consumer trends: skin-health ingredients in 2026

Vitamin C in skin care: what the evidence shows for brightening

Tested at the Guires R&D Innovation Centre.

Create your next product with CSL.