Skingredients The Key Four: 4-Step Skincare Routine Set (Cleanser, Hyaluronic Acid Serum, Retinoid Serum, SPF 50)

thumbnail-1-Skingredients The Key Four: 4-Step Skincare Routine Set (Cleanser, Hyaluronic Acid Serum, Retinoid Serum, SPF 50)

Your skincare basics bundle

Skingredients The Key Four: 4-Step Skincare Routine Set (Cleanser, Hyaluronic Acid Serum, Retinoid Serum, SPF 50)

Name: Skingredients The Key Four: 4-Step Skincare Routine Set (Cleanser, Hyaluronic Acid Serum, Retinoid Serum, SPF 50)
Rating: 4.69 (182 reviews)

Regular price: €156.80 /
Regular price: ~~€196~~
Sale price: €156.80
Unit price: per

Type Primary Refill

Product variants

The Key Four is a simple, science-led routine designed to support the essential needs of healthy skin - cleansing, hydration, protection and targeted treatment.

Suitable for all skin types and life stages, these four products work together to strengthen the skin barrier and support consistent, visible results.

This bundle is perfect for anyone new to Skingredients and wanting to build a consistent skincare routine and contains:

This bundle includes:

PreProbiotic Hydrating Cleanser: A gentle, hydrating daily cleanse that removes oil, SPF, pollution and makeup without stripping the skin. Powered by prebiotics, probiotics and polyhydroxy acid (PHA), it supports the skin barrier, reduces dehydration and helps keep dullness at bay. Non‑comedogenic and barrier‑friendly.

Skin Veg Hyaluronic Acid Serum: Daily hydration serum with hyaluronic acid, antioxidants, and pro-collagen peptide. Use twice daily to rehydrate tight, dull skin, smooth fine lines caused by dehydration and boost brightness.

Skingredients Skin Protein Anti-Ageing Retinoid Serum: A multi‑tasking anti‑ageing serum with retinyl palmitate, a gentle form of vitamin A. It supports collagen, improves texture, reduces dullness and helps balance oil. Ideal for softening fine lines and keeping skin strong and smooth.

Skin Shield SPF50 PA+++: A high‑protection, mineral SPF that defends against UV damage while giving the skin a natural glow. Ideal for sensitive or reactive skin, this smoothing formula doubles as a primer, helping simplify your morning routine without compromising protection.

Our 90-day Skin Confidence Guarantee

We're so confident in the Key Four, we're offering a 90-day money-back guarantee for customers!*

T&Cs apply

Frequently Bought Together

The Gently Does It

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SKG All Stars

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Match + Mix

€90.95 Save 15%

Who's it for?

All skin types, all skin concerns (mamas-to-be should avoid use of Skin Protein while pregnant or breastfeeding)

Tips + Tricks

Use religiously AM + PM to give your skin all that it needs for complete health and balance!

Rockstar (sk)ingredients

Full Ingredients

Oligosaccharide

a skin-soothing prebiotic

Lactobacillus

a dairy-free probiotic that boosts skin’s natural moisturising factor for hydrated skin

Gluconolactone

a polyhydroxy acid (PHA) for hydration and ultra mild exfoliation

Oligosaccharide Clinically-proven pro-collagen peptide

reduces the depth + appearance of fine lines, wrinkles + “drinkles” (aka wrinkles caused by dehydration)

Sodium hyaluronate

low molecular weight (5kDa) hyaluronic acid to instantly + deeply hydrate the skin

Gluconolactone

a PHA (polyhydroxy acid) to assist product absorption + gently exfoliate the skin for rock star ingredients to show their true talents

Fruit + veg extracts

soothing, nourishing + antioxidant in nature – the skin is an organ® and should be treated as such

Liquorice root extract

a brightening botanical ingredient + antioxidant

Vitamin A (retinyl palmitate):

the fatty form of vitamin A that speeds up skin cell renewal for pro-ageing benefits in a progressive manner

Beta carotene

a precursor to vitamin A with antioxidant benefits

Clinically-proven pro-collagen peptide

reduces the depth + appearance of fine lines and wrinkles for smoother + plumper skin

Vitamin C (ascorbic acid + ascorbyl palmitate) + vitamin E

potent antioxidants that help to protect the skin from environmental damage

Rooibos tea extract + green tea extract

an extra serving of potent antioxidants to defend the skin from damaging free radicals

Sunflower seed oil

a hydrating ingredient rich in fatty acids

Zinc oxide

a mineral that works as a physical SPF filter (SPF 50, PA +++)

Niacinamide (vitamin B3)

an antioxidant that improves skin tone and texture

Vitamin E

a potent antioxidant to protect the skin from free radical damage

Allantoin

a moisturising ingredient that smooths the skin

Oligosaccharide

a skin-soothing prebiotic

Lactobacillus

a dairy-free probiotic that boosts skin’s natural moisturising factor for hydrated skin

Gluconolactone

a polyhydroxy acid (PHA) for hydration and ultra mild exfoliation

Oligosaccharide Clinically-proven pro-collagen peptide

reduces the depth + appearance of fine lines, wrinkles + “drinkles” (aka wrinkles caused by dehydration)

Sodium hyaluronate

low molecular weight (5kDa) hyaluronic acid to instantly + deeply hydrate the skin

Gluconolactone

a PHA (polyhydroxy acid) to assist product absorption + gently exfoliate the skin for rock star ingredients to show their true talents

Fruit + veg extracts

soothing, nourishing + antioxidant in nature – the skin is an organ® and should be treated as such

Liquorice root extract

a brightening botanical ingredient + antioxidant

Vitamin A (retinyl palmitate):

the fatty form of vitamin A that speeds up skin cell renewal for pro-ageing benefits in a progressive manner

Beta carotene

a precursor to vitamin A with antioxidant benefits

Clinically-proven pro-collagen peptide

reduces the depth + appearance of fine lines and wrinkles for smoother + plumper skin

Vitamin C (ascorbic acid + ascorbyl palmitate) + vitamin E

potent antioxidants that help to protect the skin from environmental damage

Rooibos tea extract + green tea extract

an extra serving of potent antioxidants to defend the skin from damaging free radicals

Sunflower seed oil

a hydrating ingredient rich in fatty acids

Zinc oxide

a mineral that works as a physical SPF filter (SPF 50, PA +++)

Niacinamide (vitamin B3)

an antioxidant that improves skin tone and texture

Vitamin E

a potent antioxidant to protect the skin from free radical damage

Allantoin

a moisturising ingredient that smooths the skin

Full Ingredients

PreProbiotic Cleanser: Aqua (Water), Ethylhexyl Palmitate [1], Caprylic/Capric Triglyceride [1], Glycerin [2], Glyceryl Stearate [3], Myristyl Myristate [1], Palmitic Stearic Acid [3], Alpha- Glucan Oligosaccharide [1], Gluconolactone [4], Cetearyl Alcohol [3], Phenoxyethanol [5], Polymnia Sonchifolia Root Juice [2], Lactobacillus [6], Punica Granatum (Pomegranate) Seed Oil [1], Creatine [7], Arginine [7], Lysine [7], Xanthan Gum [8], Sodium Benzoate [5], Sodium Hydroxide [9], Maltodextrin [10]. Skin Veg: PreProbiotic Cleanser: Aqua (Water), Ethylhexyl Palmitate [1], Caprylic/Capric Triglyceride [1], Glycerin [2], Glyceryl Stearate [3], Myristyl Myristate [1], Palmitic Stearic Acid [3], Alpha- Glucan Oligosaccharide [1], Gluconolactone [4], Cetearyl Alcohol [3], Phenoxyethanol [5], Polymnia Sonchifolia Root Juice [2], Lactobacillus [6], Punica Granatum (Pomegranate) Seed Oil [1], Creatine [7], Arginine [7], Lysine [7], Xanthan Gum [8], Sodium Benzoate [5], Sodium Hydroxide [9], Maltodextrin [10]. Skin Protein: Aqua (Water), Caprylic/Capric Triglyceride [1], Hydrogenated Polydecene [1], Cetearyl Alcohol [2], Sorbitol [3], Ethoxydiglycol [4], PEG-100 Stearate [2], Glyceryl Stearate [2], Polyglyceryl-10 Laurate [2], Helianthus Annuus (Sunflower) Seed Oil [5], Hydrolyzed Soybean Fiber [6], Retinyl Palmitate [7], Beta Carotene [8], Ascorbyl Palmitate [9], Tetrahexyldecyl Ascorbate [9], Ascorbic Acid [9], Tocopherol [10], Tocopheryl Acetate [10], Panthenol [11], Aspalathus Linearis Leaf Extract [12], Epigallocatechin Gallate [13], Polygonum Cuspidatum Root Extract [14], Lecithin [15], Rosmarinus Officinalis (Rosemary) Leaf Extract [16], Glycerin [3], Sodium Metabisulfite [17], Propyl Gallate [17], Phenoxyethanol [17], Disodium EDTA [18], Citric Acid [19], Caprylyl Glycol [17], Ethylhexylglycerin [17], Hexylene Glycol [20], Sodium Acrylates Copolymer [21], Sodium Hydroxide [19], Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer [21], Butylene Glycol [20], Sodium Benzoate [17]. Skin Shield : Aqua (Water), Zinc Oxide [1], C12-15 Alkyl Benzoate [2], Butyloctyl Salicylate [2], Isododecane [2], Lauryl PEG-8 Dimethicone [3], Polymethylsilsesquioxane [4], Octyldodecyl Neopentanoate [2], Propanediol [5], Caprylyl Methicone [2], Dimethicone [2], Niacinamide [6], Lauryl PEG-10 Tris(Trimethylsiloxy)silylethyl Dimethicone [3], Dimethiconol/Propylsilsesquioxane/Silicate Crosspolymer [7], Trilaureth-4 Phosphate [3], Tocopherol [8], Allantoin [9], Bisabolol [10], Capryl Glycol [11], Ethylhexylglycerin [10], Hexylene Glycol [5], PEG-10 [5], Phenoxyethanol [11], Sodium Chloride [12], Sodium Hydroxide [12], Tetrasodium Glutamate Diacetate [13], Triethoxycaprylylsilane [14], CI 77492 (Iron Oxide) [15], CI 77499 (Iron Oxide) [15], CI 77491 (Iron Oxide) [15].

Starter kit and moisturiser

Absolutely loving Skingredients products! ❤️ They’re amazing quality, feel so lovely on my skin, and I’ve been really impressed with the results. You can tell so much care has gone into the products. Also the packaging is unreal. I’ll definitely be repurchasing and would highly recommend them! ✨

Hi Sarah, thank you so much for your wonderful review! We're thrilled to hear you're loving The Key Four and seeing great results. Team Skingredients x

Amazingly flawless

I’ve used this companies brands before. I’ve recently completed my 1-4 stage skin care and I’m in love with all 4 products. In process of building up more products and adding to my skin care routine. Can’t rate these products enough and have bought as gifts for family and partner.

Hi Sean, thank you so much for your wonderful review! We're thrilled to hear you love The Key Four and that it's become a part of your skincare routine. Thanks for sharing the love with your family and partner! Team Skingredients x

Brilliant

Fantastic packaging, refillable, quick easy steps to grt skin ,a little pricey but quality products that mk u feel great .
Would defently recommend for ladies over 50 .

Hi Annie, thank you so much for your lovely review! We're thrilled to hear you love The Key Four and recommend it. Your support means a lot to us, especially for ladies over 50. Cheers to great skin! Team Skingredients x

Skingredients The Key Four

Hi Sean, thank you for your positive feedback on The Key Four! Enjoy your skincare routine! Team Skingredients x

Skin feels plumper and less dehydrated

Amazing. Skin feels better than ever, did experience some purging to begin with as my skin adjusted but feeling more confident make up free

Hi Denise! We're so happy to hear your skin is feeling plumper and more confident. Thanks for sharing your experience with The Key Four. Stay radiant! Team Skingredients x

5 stars: 140 (77%)
4 stars: 34 (19%)
3 stars: 3 (2%)
2 stars: 4 (2%)
1 star: 1 (1%)

Some of the reviews shown are from related products the merchant grouped with this one.

Starter kit and moisturiser

Hi Sarah, thank you so much for your wonderful review! We're thrilled to hear you're loving The Key Four and seeing great results. Team Skingredients x

Skingredients The Key Four

Hi Sean, thank you for your positive feedback on The Key Four! Enjoy your skincare routine! Team Skingredients x

Amazingly flawless

Brilliant

Fantastic packaging, refillable, quick easy steps to grt skin ,a little pricey but quality products that mk u feel great .
Would defently recommend for ladies over 50 .

Skin feels plumper and less dehydrated

Amazing. Skin feels better than ever, did experience some purging to begin with as my skin adjusted but feeling more confident make up free

Hi Denise! We're so happy to hear your skin is feeling plumper and more confident. Thanks for sharing your experience with The Key Four. Stay radiant! Team Skingredients x

Great products - ship out internationally please!

Love these, feel like they’re definitely making improvements to my skin, just wished they had better options for shipping to the US! I’d want to buy again but the shipping here was crazy expensive 😭

Hi Rebecca! Thank you so much for your kind words. We're glad you're seeing improvements. We'll definitely pass along your feedback about international shipping options. Team Skingredients x

The Key Four

Hi Adele! Thank you for your perfect 5-star review of The Key Four.
Team Skingredients x

So easy to create a routine

My skin is def starting to see benefits 21 days in

Hi Miriam,

Thank you for leaving a review. We are delighted to hear The Key Four is already giving you great results, after only 21 days! The Key Four is an amazing routine made simple. Let us know how your skin is feeling after another few weeks. Happy glowing!

The Key Four

Hi there, thank you so much for leaving a review for 'The Key Four'! We are thrilled to hear that you are satisfied with our product. If you have any questions or concerns, please don't hesitate to reach out to our customer service team. We are always here to help. Thank you for choosing 'The Key Four'!

It was for my granddaughter, as she has acne and upset by her skin. She has been using it diligently and there is some improvement, let’s hope it continues.

Hi there!

Thank you for leaving a review for 'The Key Four'. We're so happy to hear that your granddaughter is seeing some improvement in her skin after using it diligently. We hope that the progress continues and that she feels more confident in her skin. Please let us know if there's anything else we can do to assist.

Best,
Customer Service for 'The Key Four'

The Key Four

Hi there, thank you for leaving a review for 'The Key Four'! We are so glad to hear that you are enjoying our product. Is there anything specific that you love about it? We always appreciate feedback from our customers. Thank you for choosing 'The Key Four'!

Love the products so far

Love the products so far. Delivery was super quick & packaging is so colourful.

Hi Aisling! Thank you for your positive feedback on our product, The Key Four. We're thrilled to hear that you're loving it so far and that our delivery and packaging met your expectations. We hope you continue to enjoy using our products. Have a great day!

Team Skingredients x

Love the products

I am a definite convert to skingredients I love the products, would recommend them to others, do you do an eye cream, thanks so much

Hi Jacqui,

Thank you for taking the time to leave a review for 'The Key Four' products. We're thrilled to hear that you love our skingredients and are recommending them to others.

In regards to your question about an eye cream, we are happy to let you know that all of our products, including 'The Key Four', are occular tested and safe for use around the eyes.

Thank you for your support and recommendation. We hope you continue to enjoy our products!

Team Skingredients x

The Key Four

Hi there!

Thank you for leaving a review for 'The Key Four'. We are glad to hear that you are enjoying our product. If you have any questions or need any assistance, please don't hesitate to reach out to us. We are always here to help.

The Key Four

As your email says, I purchased this set on January 31st last. I am very happy with the products . They feel very nice on my skin and I am hopeful that in time I will see the results they promise.
The only downside to my order is that although I bought it when it was advertised as a 30% off offer . I now see today that it is on offer at 50% discount. I find this very disappointing to be honest . Had I waited for two weeks before placing my order I could have availed of this offer . Does this happen on a regular basis, and if so, how does a person know when is the best time to make a purchase. Looking forward to hearing back from you, Mary Burke .

Hi Mary,

Thank you for your feedback on The Key Four set! We're so happy to hear that you're enjoying the products and are hopeful for the results.

We understand your disappointment about the timing of our recent discount offer. We apologize for any inconvenience this may have caused.

To stay up to date on our latest offers and promotions, we recommend joining the SKIN Squad by subscribing to our newsletter. This way, you'll be the first to know about new products, nerdy tips, exclusive online offers, and more.

We appreciate your support and hope you continue to enjoy The Key Four set. If you have any further questions or concerns, please don't hesitate to reach out to our customer service team.

Team Skingredients x

Never Fails

Have been a long time user of The Key Four amongst other Skin Nerd products, it leaves my skin feeling amazing, my morning and evening ritual, always highly recommended to others 🥰

Dear valued customer,

We are delighted to hear that you have been a long time user of The Key Four and that it has never failed to leave your skin feeling amazing. Thank you for making it a part of your daily routine and for recommending it to others. We truly appreciate your support and we will continue to provide you with high-quality products that you can rely on. Have a wonderful day!

Sincerely,

The Skin Nerd team

Only skin products I use!

Have been using Skingredients The Key Four for years now. The only thing I use on my skin. Highly recommend.

Hi there,

Thank you so much for your kind words and for being a loyal user of The Key Four! We are thrilled to hear that our products have been your go-to for years. We truly appreciate your recommendation and we are happy to hear that you are satisfied with our skincare line.

Thank you for choosing Skingredients and we hope to continue providing you with the best skin care products for many more years to come.

Best,
The Skingredients Team

I don’t know as they were presents

Early Days

Early days but loving products.

Hi Lisa,

Thank you for taking the time to leave a review for The Key Four. We are glad to hear that you are enjoying our products so far! We hope they continue to meet your expectations and serve you well. If you have any questions or feedback, please don't hesitate to reach out to our customer service team. We are always here to help.

Best,
Team Skingredients. x

I’ve tried lots of different products for my sensitive aging skin but skingredients gives my skin the plumpness, softness and glow that makes me look and feel younger.

I am so disappointed with the pump action of the cleanser. I loved the previous cleanser I was recommended. I am trying to poke out the cream with the handle of a teaspoon. To make matters worse I also bought a refill which is now useless. I did speak to someone very nice on the phone and she emailed a suggestion to make the pump work but I’m afraid it didn’t help.
I’m hoping the other three will have a pump action that works.
Sorry to be negative, otherwise I have loved your products up to now.
Kind regards,
Mary

Absolutely love your product, will definitely buy again, and recommend to friends

Great products

Great products at a reduced price. No complaints

Great value

Bought for a friend who has not long started to use skingredients and she loves them

Wonderful product, shame about awful packaging. Took over 2 weeks to deliver.

Just started

I love the products so far but the cleanser tube is very poor. There is no tube inside it so I have to poke into it with a stick to get the cleanser out

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Skingredients The Key Four: 4-Step Skincare Routine Set (Cleanser, Hyaluronic Acid Serum, Retinoid Serum, SPF 50)

Who's it for?

Tips + Tricks

Rockstar (sk)ingredients

Customer Reviews