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A nightly serum built around encapsulated retinal — the form of vitamin A that sits one single conversion away from what your skin actually uses.
Why retinal and not retinol
Your skin can't use retinol as it comes. It has to convert it twice: retinol → retinal → retinoic acid. Potency is lost at every step, which is why retinol asks for months of patience before anything shows.
Retinal skips the first conversion. One step instead of two — the same destination, reached far sooner, without pushing a high percentage to get there.
What that means for your skin
Visible change in weeks rather than months, and no sandpaper phase. Encapsulation releases the retinal slowly across the night, so your barrier keeps pace instead of playing catch-up.
The bottle
150 ml in an airless opaque pump. Retinal breaks down on contact with light and air — in a clear dropper bottle, half of what you paid for would be dead before you reached the bottom.
Lightweight and non-greasy. Layers under moisturiser without pilling. Fragrance-free. The pale gold colour is the retinal itself, not dye — a clear "retinal" serum should raise questions.
Not for you if you're pregnant, breastfeeding, or already using prescription tretinoin.
Every evening, from night one.
1. Cleanse and dry completely — damp skin drives retinal in faster than your barrier can handle.
2. One pump, pressed into cheeks, forehead and chin. Avoid eyelids.
3. Moisturiser on top. Always.
4. SPF every morning. Not optional.
No adjustment period. Low-dose encapsulated retinal releases slowly enough that your skin takes it nightly from the start — and nightly is what gets results. Consistency beats intensity with retinal, every time.
If your skin ever feels tight, skip a night and moisturise. Keep acids and vitamin C for the mornings.
Not for use during pregnancy, breastfeeding, or alongside prescription tretinoin.
Does it work on old stretch marks?
Yes — older stretch marks respond too. Retinal works deep down to soften how they look, helping those pale, settled marks blend more naturally into the surrounding skin so they catch the eye far less. With consistent use over a few weeks, most people find their older marks look smoother, more even and noticeably less obvious than before — the kind of change you actually notice in the mirror.
Is it cruelty-free and vegan?
Yes — the Retinal Skin Booster is 100% cruelty-free and vegan. Never tested on animals, and made with no animal-derived ingredients.
Can this be used on the face, or is it just for the body?
You can use it anywhere you need it — body and face. It's gentle enough for targeted body areas like the stomach, thighs, knees and feet, and it works just as well on your face. We'd suggest patch-testing first, then applying it wherever you want to see a difference.
What size is it — how many ounces?
It's a generous 150 ml bottle (about 5 fl oz) — roughly five times the size of a standard 30 ml face serum. That's why one bottle comfortably covers both your face and larger body areas.
What's doing the work:
Encapsulated retinal (0.2%) — one conversion from the active form of vitamin A. Smooths fine lines, evens tone, refines texture. The encapsulation releases it slowly overnight, which is why it works without the sting.
Niacinamide — the counterweight. Strengthens the barrier while the retinal pushes it, fades post-breakout marks, calms redness.
Ceramides + cholesterol — the mortar between your skin cells. Replaces what retinoids typically strip, so you get renewal without dryness.
Centella asiatica (cica) — the calming agent. Soothes reactive skin and takes the edge off the adjustment period.
Panthenol + hyaluronic acid — hydration that lasts through the night, so you wake up soft rather than tight.
What you'll notice
Smoother texture, fewer visible fine lines, more even tone, less visible pores, brighter skin. Most people see the first change in texture around week three, and tone around week six.
What's not in it
No fragrance. No essential oils. No drying alcohols. No parabens.
No filler, no mystery. Every key ingredient is chosen to help improve the look of stretch marks, support smoother texture, and keep skin comfortable through daily use.
Targets visible stretch marks at the source
Helps improve uneven tone around stretch marks
Calms skin while supporting visible repair
Reinforces weak, stretch-mark-prone skin
Soothes dryness and keeps skin comfortable
Plumps skin with deep hydration
Locks in moisture for softer-looking skin
This formula contains Micro-Liposome Retinal, an encapsulated delivery system designed to improve retinal stability and provide a more controlled release into the skin. Stretch marks are associated with structural changes in collagen and elastin within the dermal matrix. Retinal supports skin renewal and collagen synthesis, helping improve the appearance of textural irregularity, visible indentation, and color contrast associated with stretch marks.
Powered by clinically studied retinal technology, this formula is designed to support skin renewal and collagen production where stretch marks form. With consistent use, skin can appear smoother, firmer, and more even in texture — with visible stretch marks becoming progressively less noticeable over 8 weeks.
Powered by Retinal, Niacinamide, Centella, Ceramides, and deep hydrators, this multi-action formula helps improve the visible texture, depth, and contrast of stretch marks while supporting smoother, stronger, more supple-looking skin over time.
Laser treatments and microneedling can be options — but they often come with appointments, higher costs, and a bigger commitment.
Senairy Retinal Skin Booster offers a non-invasive at-home renewal routine to try first, helping improve the look of uneven texture and stubborn marks over time.
And with a generous 150ml size, it’s made for more than just small areas. Use it on the face and body — from uneven texture to stretch-mark-prone areas — as part of your consistent skin-renewal routine.
Overall rating: 4.8 / 5 from 44 reviews.
Pleasantly surprised by this one. I have sensitive body skin so I started only a few nights a week, then increased slowly. No major irritation for me and the stretch marks on my upper thighs are looking smoother. Four stars because I want to give it another month before deciding how much they’ll fade.
Not going to say they vanished because they didn’t. But after 8 weeks I can wear a swimsuit without feeling like the marks are the first thing I notice. They just blend in better now. That was exactly what I wanted.
I started using this after losing weight and being bothered by the stretch marks around my stomach. It took several weeks before I noticed anything, but now they look less pronounced and the skin feels firmer. I’ll be repurchasing if the progress keeps going.
I like it, but I’m giving 4 stars because my marks are still visible and I think it needs more time. I’m at about a month and a half. The texture is definitely smoother though and they look a little less white against my skin.
This is the first body serum I’ve actually been consistent with because it doesn’t feel greasy. I can put clothes on right after. After about 5 weeks the stretch marks on my sides look softer and my skin overall looks more even.
I have a mix of newer reddish marks and older pale ones. The newer ones seem to be responding faster, but even the old ones look smoother around the edges. No overnight result, just steady improvement which I actually trust more.
Slow but I can see it working. I almost stopped after the first month because I didn’t notice much day to day. Compared my photos at week 7 and there is definitely a difference in the contrast of the stretch marks. Keeping this in my routine.
The texture change surprised me more than anything. At first I thought nothing was happening, then I realized the marks weren’t looking as shiny or 'etched in' anymore. I use it at night with moisturizer over it and my skin feels really soft the next morning.
I’m 51 and some of these stretch marks are OLD. I had realistic expectations and just wanted them to look less noticeable. After around 6 weeks they look flatter and blend into my skin better. Very happy with that.
The bottle size is what made me try it because most retinal products are tiny. I use this on my stomach, hips and upper thighs without feeling like I have to ration it. The newer stretch marks have faded the most so far and the skin texture is noticeably smoother.
I wish I had taken better before pictures because I really can see a change now. About 8 weeks of using it on my lower stomach and the marks don’t catch the bathroom light the way they used to. Still there, but much softer looking.
Three weeks in so I’m not calling it a miracle yet. My skin feels smoother and a few of the newer marks on my thighs look a little lighter. Giving it 4 stars for now and I’ll see what another month does.
Wasn’t expecting much honestly. I have older white stretch marks on my hips from pregnancy and weight changes. Around week 6 I noticed the edges looked softer and the skin around them felt smoother. They haven’t disappeared, just look a lot less obvious.
I bought this mainly for the stretch marks on my stomach. I’ve tried oils for years and they mostly just made my skin soft. I’m about 7 weeks in and the marks are definitely still there, but they look less deep and don’t stand out as much. That’s enough of a difference for me to keep using it.
This is one of those products where you need before photos. Day to day I didn’t think much was happening. When I compared pictures after 8 weeks, the stretch marks looked smoother and much less defined.
I’ve had white stretch marks for years and knew they probably wouldn’t vanish. After using this consistently, they look less shiny and less obvious against the rest of my skin. That’s a win for me.
I use two pumps for my stomach and one for each thigh. It spreads really well so the bottle lasts. The texture change is the most noticeable result for me so far.
Four stars because I’d like to see what happens at three months, but at 7 weeks I can definitely say there is improvement. The marks are softer looking and don’t stand out as much in photos.
Nice formula for the body. I was worried retinal would be too strong but I haven’t had peeling or burning. I moisturize after it and the stretch marks on my hips are slowly looking smoother.
I almost returned this after two weeks because nothing looked different. Glad I didn’t. Around week 5 the texture started changing and now the marks are less noticeable when I look in the mirror.
About 6 weeks of use and I’m finally seeing the difference I was hoping for. The marks on my lower abdomen aren’t as bright and the skin looks more refined. I’ll keep going.
I was not looking for a miracle and this hasn’t been one. What it has done is make my stretch marks look less harsh and my skin more even. For me that’s a realistic result and I’m happy with it.
I have both pregnancy stretch marks and some newer ones from weight changes. The newer ones seem to be fading faster, but even the older ones look smoother. Definitely a product that needs consistency.
I bought this after seeing that it was a big bottle and could be used on the body. I’m glad I did. It has made the skin around my stretch marks feel softer without being greasy or sticky.
The biggest win for me is that the marks don’t look as indented. I’m about 7 weeks in. They still show up close, but from a normal distance they blend into my skin much better.
I’ve been using it every other night because my skin is sensitive. Even with that schedule I’m seeing gradual improvement in the newer stretch marks on my thighs. Very impressed so far.
This took longer to show anything than I expected, but once I compared photos the difference was obvious. The marks are less contrasted and the skin has a smoother finish overall.
My marks came from weight gain and then losing it again. I’ve been self conscious about the ones on my sides for years. They’re not gone, but they look softer enough that I notice them less.
I like that this feels more like skincare than a thick stretch mark cream. It dries quickly and layers well under body lotion. My stomach looks noticeably smoother after about 6 weeks.
Giving it 4 stars because I’m only at 4 weeks. I do see some improvement in smoothness, especially when light hits the skin from the side. I’ll keep using it for the full 8 weeks.
I was skeptical because I’ve had stretch marks since my 20s. I can’t say the oldest ones changed dramatically yet, but the texture is smoother and some smaller ones are definitely harder to see.
I use this mostly after my evening shower. Lightweight, no heavy fragrance, and doesn’t feel like body oil. The newer red stretch marks on my hips have calmed down in color quite a bit.
This isn’t instant, but it has been worth being patient with. My lower belly marks are still there, but they don’t look as deep and the surrounding skin looks more even.
At first I noticed softer skin, then around week 5 I started noticing the actual stretch marks looked less textured. I’m happy enough with the progress that I ordered another bottle for later.
I’m in my late 40s and these are not new stretch marks. I didn’t expect them to disappear, but I did want them to blend in more. That is exactly what I’m starting to see after about two months.
The bottle is a really good size for body use. I’ve been doing my stomach and thighs every night and I’m still nowhere near finished. After 6 weeks the texture of the marks has improved a lot.
I started slow because this is retinal and my skin can be reactive. So far so good. I use moisturizer after and the skin on my hips looks smoother, with some of the marks less noticeable.
My stretch marks are mostly on my upper thighs and sides. After about 7 weeks they look a little flatter and blend in better. It’s gradual, but I prefer that over products making ridiculous overnight promises.
I’ve tried cocoa butter, oils, and a bunch of random creams. This is the first one where I’ve noticed an actual change in how the stretch marks look, not just how soft my skin feels.
I honestly thought I was imagining it at first. Then I compared my week 1 photo to week 6 and the marks around my stomach really do look less sharp. Still visible, just not as obvious.
