The Complete Guide to Moisturisers: Why Your Skin Needs One and How to Choose the Right One

If there's one skincare step that often gets misunderstood, it's moisturising.

Some people think they don't need it. Others use whatever's closest to hand without thinking about whether it's right for their skin. And if you've got oily skin? You've probably been told to skip it altogether.

But here's the truth: every single skin type needs moisture. The key is finding the right moisturiser for your skin's unique needs.

In this post, I'm going to break it all down for you. Why moisturising matters, what happens when you skip it, and how to choose from Tropic's four beautiful moisturisers so you can feel confident you're giving your skin exactly what it needs.

Your skin has a natural protective barrier that keeps moisture in and irritants out. But daily life takes its toll. Cleansing, weather changes, central heating, pollution, and even ageing can all weaken that barrier, leading to something called transepidermal water loss (TEWL), which is essentially moisture escaping from your skin.

A good moisturiser does several important things:

• Locks in hydration after cleansing and toning, sealing moisture into your skin

• Supports your skin barrier, helping it stay strong and resilient

• Prevents moisture loss throughout the day (or night)

• Delivers active ingredients that target your specific skin concerns

• Prepares your skin for makeup, creating a smooth, hydrated base

Think of moisturiser as the protective seal on your skincare routine. Without it, all the good work from your cleanser, toner, and serums can simply evaporate.

This is one of the biggest skincare myths I hear, so let me clear it up: yes, oily skin absolutely needs moisturiser.

Here's why.

Oily skin and dehydrated skin are not the same thing. Your skin can produce excess oil on the surface while still lacking water deeper down. In fact, when oily skin is dehydrated, it often overcompensates by producing even more oil to try and protect itself.

So skipping moisturiser can actually make oily skin worse, not better.

The solution isn't to avoid moisturiser. It's to choose the right one.

A lightweight, balancing formula gives oily skin the hydration it needs without adding shine or clogging pores. When your skin feels properly hydrated, it can stop overproducing oil, and everything starts to feel more balanced.

Just as no two faces are the same, no single moisturiser works for everyone. Your skin has its own unique needs depending on factors like:

• How much oil it produces (too much, too little, or just right)

• How sensitive it is (does it react easily to products or environmental changes?)

• How hydrated it is (does it feel tight, comfortable, or somewhere in between?)

• What concerns you want to address (fine lines, dullness, redness, breakouts)

• Your stage of life (hormonal changes, menopause, and ageing all affect what your skin needs)

That's why Tropic has created four different moisturisers, each designed for specific skin types and concerns. Let me introduce you to each one.

If there's one moisturiser that's earned legendary status, it's Skin Feast. Over one million jars sold, and it was originally dreamt up by Tropic founder Susie's mum as a "banquet for the skin." That's exactly what it feels like.

Skin Feast is a rich, nourishing moisturiser packed with some truly beautiful ingredients:

• Bird of paradise extract brightens your complexion and supports natural collagen production

• Ectoin molecules act as a "cellular bodyguard," protecting your skin against pollution, blue light, and environmental stress

• Kakadu plum, the world's richest source of vitamin C with 100 times more than oranges, delivers powerful antioxidant protection

That gorgeous golden-orange colour comes from CO₂-extracted rosehip oil, rich in beta-carotene, which feeds your skin with exactly what it needs.

In clinical trials, Skin Feast delivered a 149% increase in skin hydration. Your skin genuinely drinks it in.

It comes in two options: beautifully scented with rose geranium, neroli, and mandarin, or completely unscented for sensitive skin. It's COSMOS organic and available as part of both the Essential and Enhanced Collections.

Best for: Dry, dehydrated, or dull skin, city dwellers needing extra protection, anyone wanting deep nourishment and a healthy glow.

If your skin has been feeling sensitive, reactive, or just not quite right, Skin Re-leaf might be exactly what it needs.

The name comes from the leaf of life plant, a remarkable succulent from Madagascar that can retain moisture like a sponge and regenerate even in the harshest conditions. It's the perfect symbol for what this moisturiser does: it gives your skin a new leaf of life.

The key ingredients are beautifully chosen:

• Leaf of life retains moisture and supports skin regeneration

• Tiger grass, traditionally used for wound healing, calms redness, rosacea, and sensitivity

• Tamanu extract is known for its repair, antibacterial, and anti-inflammatory properties

What I love most about Skin Re-leaf is that it addresses the root cause of sensitivity, a compromised skin barrier, rather than just masking symptoms. In clinical trials, it delivered a 28% improvement after 28 days.

The formula is lightweight yet deeply comforting, silky and fast-absorbing, so it never feels heavy. It's completely fragrance-free, COSMOS organic, and available as part of the Essential and Enhanced Collections.

Best for: Sensitive, reactive, dry, dehydrated, blemish-prone, inflamed, or post-treatment skin. Anyone whose skin barrier needs gentle support and repair.

If your skin tends to feel oily or shiny by midday, Fresh Waves is about to become your new best friend.

This innovative cream-gel moisturiser takes a completely different approach to hydration. Instead of heavy creams that sit on the surface, it delivers a refreshing splash of lightweight moisture that absorbs instantly and leaves behind zero shine.

The formula is powered by some really clever ingredients:

• Probiotics support a healthy skin microbiome, helping your skin find its natural balance

• Sea kelp extract regulates excess oil production and helps tighten pores

• Hyaluronic acid delivers lightweight hydration without clogging pores or adding shine

In clinical trials, 91% of users agreed their skin felt less oily, less uneven, and more refined after 28 days. The texture is beautifully refreshing, delivering instant cooling hydration that layers perfectly under makeup.

It's silicone-free, COSMOS organic, and available as part of the Essential and Enhanced Collections.

Best for: Oily, combination, blemish-prone, or congested skin. Anyone who wants hydration without shine or heaviness.

While you sleep, your skin is hard at work. Skin cell regeneration is said to almost double between 11pm and 4am, which is why what you put on your skin at night really matters.

Skin Dream is a deliciously whipped night cream designed to work in harmony with your skin's natural overnight renewal cycle. It's rich, indulgent, and packed with powerful actives that get to work while you rest.

The key ingredients are seriously impressive:

• Plant ceramides restore and strengthen your skin's protective barrier, locking in moisture and improving firmness and resilience overnight

• Bio-retinol, a plant-based alternative to traditional retinol, stimulates collagen production, smooths fine lines, and enhances elasticity without irritation, making it safe for sensitive skin

• Murumuru butter deeply hydrates and softens, reinforcing your skin barrier and leaving skin plump and comforted by morning

That beautiful berry-pink colour comes from astaxanthin, a powerful antioxidant extracted from algae that enhances radiance and protects against environmental stressors.

In an independent clinical study, 91% of users saw a visible reduction in wrinkles after 28 days. You wake up to visibly firmer, deeply hydrated, and radiant skin.

It's COSMOS organic and available as part of the Enhanced Collection.

Best for: Fine lines and wrinkles, weakened or compromised skin barriers, dull or lacklustre complexions. Anyone wanting to support their skin's natural overnight renewal.

Still not sure which one is right for your skin? Here's a simple guide:

Your skin feels dry, dehydrated, or dull → Skin Feast (Nourish/Yellow)

Your skin is sensitive, reactive, or compromised → Skin Re-leaf (Hydrate/Green)

Your skin is oily, combination, or blemish-prone → Fresh Waves (Balance/Blue)

You want overnight firming, plumping, and renewal → Skin Dream (Radiance/Pink)

And remember, you can absolutely use different moisturisers for day and night. Many people use their daytime moisturiser (Skin Feast, Skin Re-leaf, or Fresh Waves) during the day and add Skin Dream as their overnight treatment for extra firming and renewal while they sleep.

Whichever moisturiser you choose, here are a few tips to get the most from it:

• Apply 2-3 pumps after cleansing, toning, and applying your serums

• Use upward circular motions to massage it into your skin

• Don't forget your neck and décolletage, they need moisture too

• For daytime moisturisers, follow with SPF if your moisturiser doesn't contain sun protection

• For Skin Dream, apply as the last step in your evening routine to lock in all your nighttime skincare

Choosing the right moisturiser can feel overwhelming, but it doesn't have to be. If you're not sure which one would work best for your skin, I'm here to help.

You can try Tropic's AI Skin Quiz for a quick recommendation, or send me a message and we can chat about your skin's needs.

I offer one-to-one skincare consultations (in person or on Zoom) where I can help you build a simple, effective routine that works for you.

No pressure, no obligation, just honest advice to help you feel confident in your skincare

choices.

Natalie x

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