The Skin Diary Full 3 Step Routine Bundle

Three formulas. A considered routine, morning to night.

Bring your Skin Diary routine together with a brightening morning serum, a moisturising SPF 50 day cream and nourishing night care. Each full-size formula has a clear place in your day, helping you care for dullness, uneven-looking tone, fine lines and loss of firmness without filling your shelf with extra steps.

What's included

• Pro-Helix C Collagen Peptide Brightening Serum, 30ml: a lightweight, milky serum combining 15% THDA vitamin C, acetyl-zingerone and two signalling peptides for radiance and firmer-looking skin.
• Age Defence Moisturising Day Cream SPF 50, 50ml: daily hydration with broad-spectrum SPF 50 PA++++, antioxidants and photolyase and endonuclease enzymes.
• Night Repair Therapy, 50ml: evening care with retinyl palmitate, peptides, hyaluronic acid and nourishing botanical oils to soften the appearance of fine lines and support a supple, comfortable complexion.

Who is it for?

For anyone looking to bring brightening, daily UV protection and firmness-focused evening care into one straightforward routine. The formulas are described as suitable for sensitive skin, making them an option to consider if you have found other vitamin C or retinoid products difficult to tolerate. This does not guarantee irritation-free use. Patch test each product before introducing it.

Your routine at a glance

How to use

Morning: apply one or two pumps of Pro-Helix C to clean, dry skin. Follow with Age Defence Moisturising Day Cream SPF 50, applying generously and evenly to the face and neck as the final skincare step before makeup. Reapply every two hours during prolonged sun exposure and follow the sunscreen packaging directions.

Evening: warm a pea-sized amount of Night Repair Therapy between your fingertips and smooth over the face and neck after cleansing. Use as the final step in your evening routine.

Please note: patch test each product 24 hours before first use. Night Repair Therapy is not suitable during pregnancy or breastfeeding. Wear broad-spectrum sunscreen every day, including the morning after using Night Repair Therapy. Individual tolerance varies. Consult each product's packaging for full ingredients, directions and precautions.

Why these three?

The morning pair combines antioxidant-led serum care with moisturising sun protection. At night, the focus shifts to retinoid, peptide and moisture care. It is a practical way to give each formula its own role while keeping the routine easy to follow.

About The Skin Diary

Founded by consultant dermatologists Dr Clare Kiely, Professor Chris Griffiths OBE, Dr Tamara Griffiths and Dr Richard Barlow, The Skin Diary brings dermatological research into everyday skincare. Its Cell-to-Surface™ approach considers cellular findings, measured changes in skin appearance and user experience as distinct types of evidence, rather than interchangeable promises.

MORNING
1. Apply one or two pumps of Pro-Helix C to clean, dry skin.
2. Apply Age Defence Moisturising Day Cream SPF 50 generously and evenly to the face and neck as your final skincare step before makeup. Reapply every two hours during prolonged sun exposure and follow the sunscreen packaging directions.

EVENING
Warm a pea-sized amount of Night Repair Therapy between fingertips and gently smooth over the face and neck after cleansing. Use as the final evening step.

PRECAUTIONS
Patch test each product 24 hours before first use. Night Repair Therapy is not suitable during pregnancy or breastfeeding. Use broad-spectrum sunscreen daily, including the morning after Night Repair Therapy. Individual tolerance varies; sensitive-skin suitability does not guarantee irritation-free use. Follow each product's packaging instructions.

PRO-HELIX C, 30ml: KEY INGREDIENT HIGHLIGHTS
15% THDA vitamin C (tetrahexyldecyl ascorbate): vitamin C care for dullness and uneven-looking tone.
Acetyl-zingerone: complementary antioxidant care.
Two signalling peptides: included for firmness-focused care. Exact peptide names were not supplied.

AGE DEFENCE MOISTURISING DAY CREAM SPF 50, 50ml: KEY INGREDIENT HIGHLIGHTS
Encapsulated sunscreen filters: broad-spectrum SPF 50 PA++++ protection.
Photolyase and endonuclease: enzymes included in the brand's DNA-repair enzyme technology. Their inclusion does not replace sunscreen or establish reversal of sun damage.
Bilberry extract and raspberry seed oil: antioxidant ingredients.
Squalane, glycerin and vitamin E: moisturising care.

NIGHT REPAIR THERAPY, 50ml: KEY INGREDIENT HIGHLIGHTS
Retinyl palmitate: a vitamin A ester for renewal-focused evening care.
Palmitoyl tripeptide-1 and palmitoyl tetrapeptide-7: peptides for firmness-focused care.
Hydrolysed hyaluronic acid, glycerin, sunflower seed oil, coconut oil, cocoa seed butter, sweet almond oil and jojoba seed oil: hydration and nourishment.

NIGHT REPAIR THERAPY: FULL INCI FROM THE EXISTING PRODUCT LISTING
Aqua, Helianthus Annuus Seed Oil, Cetyl Alcohol, Cetearyl Alcohol, Cocos Nucifera Oil, Glycerin, Theobroma Cacao Seed Butter, Prunus Amygdalus Dulcis Oil, Glyceryl Stearate, Simmondsia Chinensis Seed Oil, PEG-100 Stearate, Hydrolyzed Tomato Skin, Vaccinium Myrtillus Fruit/Leaf Extract, Butylene Glycol, Niacinamide, Hydrolyzed Hyaluronic Acid, Tocopherol, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Retinyl Palmitate, Carbomer, Triethanolamine, Phenoxyethanol, Ethylhexylglycerin, Polysorbate 20, Sodium Lactate.

The Pro-Helix C and Age Defence sections are ingredient highlights, not full INCI lists. Always check each product's packaging for its current complete ingredient list before use.

The Skin Diary was founded by consultant dermatologists Dr Clare Kiely, Professor Chris Griffiths OBE, Dr Tamara Griffiths and Dr Richard Barlow. The brand translates their interest in lifelong skin health into a focused collection for daily use.

Its Cell-to-Surface™ approach brings together cellular investigation, measured skin-surface outcomes and consumer experience. These evidence types offer different perspectives on a formula and should be read separately, rather than treated as equivalent results.

The Full 3 Step Routine brings the brand's morning vitamin C serum, moisturising SPF and targeted night care together at South William Clinic.

EVIDENCE BY PRODUCT, NOT A TRIAL OF THE COMPLETE BUNDLE

PRO-HELIX C
Independent 35-person clinical study with assessments at days 7, 28 and 56: 94% showed brighter skin at day 7, assessed with a skin gloss meter. Visible fine-line and wrinkle reductions were reported from seven days.
Separate 45-person, 28-day consumer study: 87% reported firmer, more plump-looking skin.
Manchester Patch Test human-skin biopsy assay: significant fibrillin increase reported.
Spatial transcriptomic analysis of human skin biopsy: 2.4-fold SOD3 gene expression in basal keratinocytes. This is a molecular finding, not 2.4-fold sun protection or visible improvement.

AGE DEFENCE
The existing product listing describes independent gene-expression testing in 3D human skin equivalents exposed to simulated UV radiation, examining P21, PTGES and MMP1. These are laboratory molecular markers, not direct measurements of wrinkle reduction or proof of reversing accumulated sun damage in users.

NIGHT REPAIR THERAPY
The existing product listing reports Manchester Patch Test findings relating to collagen and elastic-fibre markers, clinical appearance findings and consumer feedback. Detailed protocols and sample sizes were not supplied for those summaries, so no numerical superiority or guaranteed outcome is claimed here.

Cellular and biopsy findings, clinical appearance measurements and consumer perceptions are different evidence types. Evidence for an individual formula does not establish a combined clinical benefit for this bundle. Individual results vary.

Q: What is included?
A: Pro-Helix C Collagen Peptide Brightening Serum 30ml, Age Defence Moisturising Day Cream SPF 50 50ml and Night Repair Therapy 50ml. All three are full size.

Q: What order should I use them in?
A: In the morning, apply Pro-Helix C after cleansing, then Age Defence SPF 50 as your final skincare step before makeup. In the evening, use Night Repair Therapy after cleansing as your final step.

Q: Who is the routine for?
A: Anyone seeking a straightforward routine for dullness, uneven-looking tone, fine lines and loss of firmness, with moisturising daily sun protection.

Q: Can sensitive skin use the bundle?
A: The formulas are described as suitable for sensitive skin, but individual tolerance varies. Patch test each product 24 hours before first use. Suitability does not guarantee irritation-free use.

Q: Does the night cream contain retinol?
A: Its listed vitamin A ingredient is retinyl palmitate, a retinoid ester. It should not be described as pure retinol.

Q: Can I use the complete routine during pregnancy or breastfeeding?
A: No. Night Repair Therapy is not suitable during pregnancy or breastfeeding. Seek advice on an appropriate alternative routine.

Q: Do I still need to reapply the day cream?
A: Yes. Apply generously and evenly and reapply every two hours during prolonged sun exposure, following its packaging instructions.

Q: Can Pro-Helix C replace sunscreen?
A: No. Apply Age Defence SPF 50 after the serum. Antioxidant care is not a substitute for sun protection.

Q: Were all three products clinically tested together?
A: No combined routine trial was supplied. The study information relates to individual formulas, and laboratory findings are separate from visible clinical results and consumer feedback.

Q: Where can I check the full ingredients?
A: Refer to each product's packaging for its current complete ingredient list. The ingredient section distinguishes highlights from the available Night Repair Therapy INCI.