Amino-acid cleansing base
Sodium cocoyl glutamate forms part of a milder surfactant system for daily cleansing.
Rens
Foaming Cleanser
A fragrance-free foaming cleanser designed to remove daily build-up while maintaining a comfortable after-feel for sensitive and reactive skin.
Product promise
Can a cleanser feel clean without feeling harsh?
The formula is organised as a system. Each part has a defined role rather than a decorative ingredient story.
Humectant support
Glycerin, propanediol and betaine support a more comfortable after-feel.
Replenishing co-surfactants
Coco-glucoside and glyceryl oleate soften the sensory profile and reduce a stripped finish.
Evidence record
Performance Testing
RENS Foaming Cleanser was screened for pH behaviour under three storage conditions and foam-volume behaviour over a 20-minute bench test.
Recorded from day 0 to day 13 across no-test, 4°C and 40°C samples.
Foam volume retained after 20 minutes, from 4.5 mL to 3.5 mL.
Total foam and solution volume retained after 20 minutes in the recorded screen.
pH screening
Recorded pH across thirteen days
5.41Day 13 mean pH
How to read
The line graph compares recorded pH under three storage conditions. The narrow range supports formula screening context, not a finished-product stability claim.
View recorded data
| Time | No test | 4°C | 40°C |
|---|---|---|---|
| Day 0 | 5.43 | 5.43 | 5.42 |
| Day 5 | 5.40 | 5.44 | 5.39 |
| Day 8 | 5.40 | 5.43 | 5.38 |
| Day 9 | 5.43 | 5.42 | 5.38 |
| Day 11 | 5.42 | 5.42 | 5.39 |
| Day 13 | 5.41 | 5.42 | 5.40 |
Preliminary in-house screening. Long-term stability, preservative efficacy and dermatological testing would be required before final commercial claims.
Foam screening
Foam volume over twenty minutes
3.5 mL20 min foam volume
Screening note
Foam retention was calculated from the recorded foam volume at 20 minutes. FSI was recorded as 89, with foam drainage recorded as 0.5.
View recorded data
| Time | Foam + solution | Foam volume |
|---|---|---|
| 0 min | 9.50 | 4.50 |
| 1 min | 9.50 | 4.50 |
| 5 min | 9.00 | 4.00 |
| 10 min | 8.75 | 3.75 |
| 15 min | 8.50 | 3.50 |
| 20 min | 8.50 | 3.50 |
Preliminary in-house screening. Long-term stability, preservative efficacy and dermatological testing would be required before final commercial claims.
Selected literature notes
Ingredient Evidence
The selected literature informs the formulation direction. It does not represent clinical testing of the finished product.
Amino-acid surfactant systemSodium cocoyl glutamate
Selected as part of a milder cleansing base designed for daily use.
Humectant supportGlycerin · propanediol · betaine
Supports water binding and a more comfortable after-feel during cleansing.
Replenishing co-surfactant profileCoco-glucoside · glyceryl oleate
Helps soften the sensory profile and reduce the stripped feeling associated with stronger cleansers.
Current formula record
Rens full ingredient declaration
Published for ingredient transparency while the formulas move through final production and label review.
Aqua, Sodium Cocoyl Glutamate, Sodium Cocoamphoacetate, Glycerin, Propanediol, Betaine, Coco-Glucoside, Glyceryl Oleate, Gluconolactone, Sodium Benzoate, Hydroxypropyl Beta-Cyclodextrin, Allantoin, Panthenol, Polyquaternium-7, Citric Acid, Sclerotium Gum, Sodium Phytate, Xanthan Gum, Sodium Chloride.
Provisional INCI order derived from the current percentage formula and supplier blend declarations. Confirm sub-ingredient ratios and final label order against supplier documentation before commercial release.
Lab notebook
Development Story
“RENS began with a simple formulation question: can a cleanser feel clean without feeling harsh?”
The development goal was not maximum foam. It was balance: a soft microfoam, a mild pH range, clean rinsing and a comfortable after-feel suitable for sensitive-skin routines.
During development, the surfactant system, clarity, odour profile, flow, foam structure and pump compatibility were adjusted through multiple trials. Each version was assessed not only for how it looked on day one, but how it behaved over time.
The final direction reflects the N°55 approach: restrained, barrier-conscious and tested for balance rather than excess.
- Soft, fine microfoam
- Product-specific pH screening
- Clean rinse without a film
- Comfortable after-feel
- Clarity, odour, flow and pump checks
Packaging & Responsibility
Responsibility Notes
Packaging choices are considered alongside formula performance. These notes describe the current direction, not a claim of environmental perfection.
- Primary pack
- Glass bottle direction
- Dispensing
- Controlled pump dispensing
- Secondary pack
- Restrained paperboard with minimal ink coverage
- Under review
- Transport, refill feasibility, local sourcing and recyclability remain under evaluation
Routine guidance
How to use
Introduce one new formula at a time. Final directions on the product label take precedence.
- 1
Dispense
Use one to two pumps on damp skin.
- 2
Cleanse
Massage gently without scrubbing.
- 3
Rinse
Rinse thoroughly and pat dry before moisturising.
Frequently asked questions
Can Rens be used daily?
It is designed as the daily cleanser in the N°55 routine. Adjust frequency if your skin feels uncomfortable.
Where does it sit in the routine?
Rens is the first step, before toner, serum and moisturiser.
Is it fragrance free?
Yes. The current Rens formula record contains no added fragrance.
What if my skin reacts?
Stop use if irritation occurs and seek professional advice for persistent symptoms.
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