A Love Letter to Vitamin C
Let me tell you about my favourite ingredient. Not in a measured, balanced, here-are-the-pros-and-cons way, I'll do that too, further down, but first I just want to gush a little. Because vitamin C and I have a history, and it deserves its flowers.
It's the ingredient I reach for on tired mornings, the one that makes my skin look like I've had eight hours of sleep and a green juice when in truth I've had neither. It's the quiet reason people ask if I've "been away somewhere." It gives that fresh, lit-from-within glow that no highlighter has ever quite managed to fake. If I could only keep one brightening step in my whole routine, reader, this would be it.
So allow me to make the case for the ingredient I love most, and to save you from the one mistake that makes people give up on it too soon.
Why I adore it
Vitamin C is an antioxidant, which is a lovely, hardworking thing for skin to have. Used regularly, it helps brighten the look of dull skin and even out the appearance of uneven tone, leaving you with a fresher, more radiant complexion.
Two things it's quietly brilliant at:
Brightening: it helps soften the look of dark spots and uneven patches, so your skin looks more even and luminous over time. This is the glow I keep going on about.
Protecting: as an antioxidant, it helps defend your skin against the daily environmental stress, pollution, sun, general city life, that leaves skin looking tired and dull.
Like most things worth having, it works slowly and steadily. Don't expect it to transform your skin overnight, any product that promises that isn't being honest with you. But use it consistently and you'll get a little more glow week by week.
The one thing that trips people up
Here's where my love letter turns practical for a moment, because there's a reason some people try vitamin C and decide it "isn't for them." They think vitamin C is one single ingredient, one bottle as good as the next. It isn't. It's a whole family, and each member has its own personality. Some are potent but a little temperamental. Some are gentle and easygoing. Picking the wrong one for your skin is the single most common reason people get put off.
So let me introduce you to the ones you'll actually meet on a label:
L-ascorbic acid is the purest, most active form, the overachiever of the family. It's the one most associated with a bright, radiant glow. The trade-off is that it can feel a little active on the skin, so it's best treated with a touch of care when you're starting out.
Magnesium ascorbyl phosphate is the gentle, steady one. Kinder to sensitive skin, more stable, and still lovely for brightening. If pure vitamin C has ever felt like too much for you, this is the friend you want.
Glyceryl ascorbate is another easygoing, well-tolerated form that brings a little hydration along with the brightening. A quiet achiever.
And you'll often spot ferulic acid nearby. It's not a vitamin C itself, but an antioxidant that's often paired with it, a thoughtful little addition rather than the star of the show.
Why the best formulas use more than one
Here's what I've come to love most: you don't actually have to choose. The loveliest vitamin C formulas bring a few forms together, a potent one for that glow, gentler ones for stability and comfort. That way you get the brightness and the kindness. And honestly? You shouldn't need a chemistry degree to buy a serum. A well-made formula does the thinking for you, so you can just enjoy the glow.
How to love it back
Vitamin C loves the morning. It's best applied to clean skin, before your moisturiser, as the first active step of your day.
A simple order:
- Cleanse: a gentle wash to start fresh.
- Vitamin C: a few drops, patted gently over your face.
- Moisturise: lock it all in.
- Sunscreen: and this one isn't up for debate. Vitamin C works beautifully alongside SPF, and daytime sun protection is a non-negotiable, especially when you're brightening. Every single morning.
If you're new to it, ease in gently, every other morning to begin with, building up as your skin gets comfortable. And if you're using a pure form, a soothing, well-made serum with calming botanicals makes the whole thing far lovelier.
A few honest notes
Start gently. Pure vitamin C especially can feel active at first. There's no prize for rushing.
One new thing at a time. If vitamin C is your new addition, hold off on layering other strong actives at the same time. Give your skin room to adjust.
It pairs beautifully with retinol, just keep them at opposite ends of the day, vitamin C in the morning, retinol at night. An easy way to enjoy both.
If your skin is very reactive or you have a specific condition, a quick word with your doctor or dermatologist is always worth it.
Give it time
Here's the part I have to say even in a love letter: give it time. Vitamin C rewards consistency far more than intensity. Use it steadily each morning and your skin will start looking fresher and more radiant within a few weeks, with a more even-looking tone building over the months that follow. Pick the right form, use a little each day, always follow with sunscreen, and let it become a quiet, lovely part of your morning. That's the whole secret.
Why we created Sérum Soleil
I loved vitamin C long before I ever made one, but I kept meeting people who'd been let down by it, either by formulas too harsh to enjoy, or by never understanding which type to reach for. It broke my heart a little, all these people who'd decided the ingredient I adored simply "wasn't for them."
So I created Sérum Soleil. Instead of asking you to choose between potent and gentle, I brought three forms of vitamin C together, along with ferulic acid, so you get real, radiant brightening and a formula that stays kind to your skin. I tucked in soothing botanicals like calendula and chamomile to keep things calm, because I never wanted anyone else to give up on this ingredient.
Not to toot my own horn, but it's the vitamin C I wish everyone could fall for the way I did. Brightening, done properly, and gentle enough to actually look forward to. That's the whole idea.
