Phytofill™ 1% Firming Booster

Name: Phytofill™ 1% Firming Booster
Brand: Pai Skincare
SKU: LAB-047
Price: 19.00 GBP
Availability: InStock

£19.00

10ml / 0.3 fl.oz

A concentrated firming booster that relaxes expression lines and visibly smooths skin from first application, no injectables required. 84% agreed skin looked smoother in just one week.

Firming

Smoothing

Smooths fine lines & wrinkles

Boosts Elasticity

Free delivery when you spend £30* | 90-Day returns

Phytofill™ 1% Firming Booster

£19.00

•

Vegan

•

Cruelty Free

Why You'll Love It

FIRMER SKIN, FAST

Supercharge your skincare with a potent dose of Phytofill™, a 100% natural two-active system proven to smooth the appearance of fine lines in just 24 hours*. No filter, no needles, all natural. Imagine your skin as a smooth sheet of paper. As you move, smile, frown and laugh, it scrunches and crinkles, and over time, those folds get harder to iron out.

Phytofill works on two fronts: a biomimetic film of tara pod and sea moss tightens and smooths from first application, while Butterfly Lavender relaxes the muscle micro-contractions that cause expression lines in the first place. Less contraction means fewer creases, so you can keep on smiling without worrying about laughter lines.

The Butterfly Lavender extract is a targeted CO2 concentrate, not a whole essential oil. That means you get the active compound (fenchone, a natural muscle relaxant) without the broad mix of volatiles that can irritate reactive skin. It's used at 1%, the maximum clinically tested dose, so nothing's been diluted to make room for filler ingredients. Results build over time, too. In our consumer trial, 57% saw smoother skin at 2 hours, rising to 84% at 7 days. Supplier clinical testing showed a 17.4% reduction in wrinkle depth at 24 hours, with skin roughness still reduced 12.7% a full week after use ended.

Directions

Add 1–2 drops to your moisturiser, serum, or face oil and blend before applying. That's it. The biomimetic film gets to work on contact, tightening and smoothing while the butterfly lavender extract relaxes expression lines beneath the surface.

You can also apply it directly to clean, dry skin if you prefer, then carry on with the rest of your routine. Use morning and evening for the best results. Suitable for face and décolletage.

Want to go all in? Pair with Peptides 5% Smoothing Booster in the evening for collagen support, and Stabilised Vitamin C 20% Brightening Booster in the morning for antioxidant protection. Follow with Bonne Nuit Night Cream at bedtime. Your expression lines won't know what hit them.

Full Ingredients

Aqua (water), Pentylene Glycol, Triisostearin, Caprylic/capric Triglyceride, Inulin, Caprylyl Glycol, Xanthan Gum, Caesalpinia Spinosa Fruit Extract, Kappaphycus Alvarezii Extract, Lavandula Stoechas Extract, Glycerin, Tocopherol* (vitamin e), Fructose, Lactic Acid, Camphor.

100% natural origin.

*Organic

Recycling

Say no to landfill! Let's recycle everything! - Sarah

Unscrew the dropper and remove it from the bottle. Gently pull the glass pipette out of the dropper. After rinsing, place the glass bottle and pipette into your household recycling. Place the dropper and rubber bulb into your Pai mailer for return delivery to us.

All Pai boxes, cartons, sleeves and inserts can be recycled with your household paper recycling.

The majority of your Pai packaging can be recycled at home, but some components need specialist recycling. We've partnered with a specialist programme to make this as easy as possible for our UK customers.

Keep your Pai mailer box (it can be flat packed for easy storage). Fill it with the packaging elements you can't recycle at home, and clearly label the box RECYCLING. Create your free returns label and drop it off at the post office.

Please note we are unable to accept glass or non-Pai packaging. Glass bottles can be separated and placed into your household recycling.

If you are in the UK and unsure what your local services accept, visit recyclenow.com.

69%

agreed it reduced the appearance of fine lines and wrinkles*
81%

agreed skin felt firmer*
74%

agreed skin looked smoother after 24 hours*

*Based on an independent consumer trial of 113 subjects

Key Ingredients

Phytofill™

Extracted from Butterfly Lavender (also known as Stoechiol®) this potent oil targets the cause of expression lines, relaxing the skin to reduce their appearance for a firmer, smoother finish. We’ve combined it with a film-forming active and prebiotic to gently lift and protect.

"There's no such thing as Botox in a bottle. But when we discovered this ingredient we had to formulate with it. Using expert CO2 extraction, we've taken the most active part of the plant, which tackles wrinkles with the same principles as injectables – relaxing the muscle to help smooth expression lines. Without irritation, and without any permanent changes to the skin."

SARAH BROWN
FOUNDER, PAI SKINCARE

Why should I choose Phytofill for expression lines and fine lines?

Phytofill combines two actives on different timescales. The biomimetic biopolymer film tightens and smooths from first application, while butterfly lavender extract at 1%, the supplier's maximum clinically tested dose, relaxes expression lines at their muscular source and progressively reconstructs the epidermis. In an independent consumer trial of 108 subjects, 70% agreed it reduced the look of wrinkles and fine lines after 7 days, and 68% agreed it reduced the appearance of expression lines, both statistically significant.

How do I use this booster in my routine?

Add 1-2 drops to your moisturiser, serum, or face oil and apply as normal, or apply directly to skin before moisturising. It's suitable for face and décolletage, morning and evening. The booster format means you get the full 1% clinical dose of butterfly lavender active without changing the products you already use.

Is Phytofill suitable for sensitive skin?

Very much so. Phytofill is independently 96-hour patch tested on sensitive skin volunteers, fragrance-free, essential oil-free, and non-comedogenic. The butterfly lavender extract is a targeted CO2-extracted concentrate rather than a whole essential oil, so it delivers the specific active compounds without the broad volatile aromatics that commonly trigger irritation in reactive skin.

Is Phytofill safe during pregnancy and breastfeeding?

Yes, Phytofill is safe for use during pregnancy and breastfeeding. It's 100% natural, free from retinoids, essential oils, fragrance, and all other ingredients commonly flagged during pregnancy.

How long do the effects of Phytofill last?

Results build over time and stick around even after you stop. In a supplier clinical trial of 20 volunteers, skin roughness was still reduced by 12.7% seven days after use ended, which points to genuine epidermal reconstruction rather than a temporary cosmetic effect. An independent consumer trial of 108 subjects backs this up: agreement that skin looked smoother rose from 57% at 2 hours to 84% at 7 days, with firmness climbing from 64% to 81% over the same period. Regular use gives the best progressive results.

Can I use Phytofill as a natural alternative to injectables?

That's exactly the thinking behind it. Phytofill targets the same root cause as injectable neurotoxins, repeated muscle micro-contractions, but through a topical, fully reversible botanical mechanism rather than paralysis. A supplier clinical trial on 20 volunteers showed a 17.4% reduction in main wrinkle depth versus placebo at 24 hours. It won't replicate the dramatic freeze of injectables, but for anyone looking for a natural, non-invasive route to visibly softer expression lines, it's a credible option with real data behind it.

Which other Pai boosters work well with Phytofill?

Phytofill pairs especially well with Peptides 5% Smoothing Booster in the evening, since the two target ageing through entirely different mechanisms: Phytofill relaxes expression lines at their muscular source, while Peptides 5% stimulates collagen and elastin synthesis. Add Stabilised Vitamin C 20% in the morning for antioxidant protection, and Bonne Nuit Night Cream at bedtime to address inflammaging overnight.

What is butterfly lavender and how does it reduce expression lines?

Butterfly lavender (Lavandula stoechas) is a Mediterranean species distinct from common lavender. Pai uses a CO2 supercritical extract that preserves fenchone, a bicyclic monoterpene with independently published antispasmodic activity via potassium channel activation (PMID: 35408513). Rather than paralysing the muscle, fenchone eases micro-contractions so the overlying skin can smooth.

In a supplier clinical trial of 20 volunteers aged 46 to 59, twice-daily application at 1% produced a 17.4% reduction in main wrinkle depth versus placebo at 24 hours (p<0.05). The extract also stimulates keratinocyte division and adhesion protein expression, progressively reconstructing the epidermis beneath the lines.

What is the biomimetic biopolymer film and what does it do?

It's an engineered interpenetrating biopolymer network (IBPN) that cross-links two botanical polysaccharides: galactomannans from tara pod (Caesalpinia spinosa), which deliver an astringent tightening effect, and sulfated galactans from elkhorn sea moss (Kappaphycus alvarezii), which form a flexible film that physically fills and smooths fine lines. These aren't simply blended; the patented cross-linking creates a single biomimetic film with superior resistance, flexibility, and adhesion. The supplier has tested this technology across 28 studies on over 1,100 volunteers, confirming its tensor and smoothing efficacy.

What certifications does Phytofill have?

Phytofill is COSMOS Natural certified by the Soil Association, Leaping Bunny certified cruelty-free, and registered vegan. It's also independently 96-hour patch tested on sensitive skin volunteers, which goes beyond standard industry requirements. The formula is 100% natural origin and RSPO palm certified.

What makes Phytofill different from peptide-based or retinol firming products?

Most topical firming products use synthetic peptides that modulate neurotransmitter release at the neuromuscular junction, or retinoids that accelerate cell turnover. Phytofill works through a different pathway entirely: its butterfly lavender extract directly and reversibly inhibits muscle micro-contractions, confirmed in supplier in vitro testing on a validated motoneurone/muscle cell co-culture model. The inhibition reversed completely when the extract was removed, confirming it eases contraction rather than blocking it permanently. Because the mechanisms don't overlap, Phytofill can be layered with peptide-based products for a multi-pathway approach.

Overall rating: 4.6861315 / 5 from 137 reviews.

AI Generated Review Summary

Phytofill™ 1% Firming Booster is a natural skincare product that customers praise for its ability to reduce fine lines and improve skin texture. Many users report a noticeable difference in their skin's appearance, with smoother, plumper, and glowing results. The product is fragrance-free and suitable for sensitive skin, with a fresh scent that absorbs quickly.

Summary topics

Effectiveness of Booster (25%): A significant number of customers brought up that this booster is fantastic and they have noticed a difference.
Fragrance and Absorption (5%): It was reported by customers that the product smells fresh and absorbs quickly with a nice clean scent.
Reduction of Fine Lines (19%): A significant number of customers brought up that this product effectively reduces fine lines and improves skin texture.
Customer Satisfaction with Results (9%): Customers loved the results, with many expressing their delight and satisfaction with the product's ability to improve their skin.
Texture and Sensation (10%): Customers raved about how the product feels on their skin, describing it as smooth and silky.

Review topics: [irritation, smell, results, works, improvement, feels, skin, lines, looks, bottle, consistency, use, glow, compliments, difference, booster, addition, effect, change, drops, buy, pai, serum, friends, skincare, make].

Review highlights

"I love the immediate glow that this booster gives to the skin too." — Dagmar L.
"My skin looks smoother and firmer since I started to use it regularly with my Pai serum." — Anna B.
"I also love the immediate glow that this booster gives to the skin too." — Liz

Reviews

Great

"Skin looks better. No dryness or irritation"

— Sue C. (5/5)

it feels great but don't

"it feels great but don't see significant difference"

— LILIT D. (3/5)

A Gentle but Noticeably Effective Firming Booster

"What I appreciate most is the subtle but visible firming effect over time—my skin feels a bit smoother and more supported, especially around areas where I tend to notice early loss of elasticity. It hasn’t irritated my skin at all, which is a big plus since I’m usually sensitive to active ingredients. Overall, it’s a straightforward, well‑formulated booster that delivers what it promises. Nothing dramatic overnight, but definitely a steady improvement and a pleasure to use. Five stars."

— Denis L. (5/5)

Gentle somewhat effective

"Gentle somewhat effective. Will continue to use it"

— Tamara H. (4/5)

appreciate the product!

"while i think this booster is thinner this time around, i still love the product and add it to my regular routine."

— Laura M. (4/5)

Really moisturising

"Hydrating and softening. Feels very nice mixed with cream as well."

— Adriana M. (5/5)

Really boosts!

"Really boosts!"

— Yelena K. (5/5)

Fresh

"Very hidratating but not heavy nor Oily."

— Beatriz R. (5/5)

Great product

"Skin looks younger"

— Sarka K. (5/5)

Love the boosters

"I have been using this with the vitamin C, retinol and HA serums and have noticed a big improvement in my skin overall. My only complaint is that often the dropper gives me more than I would like, but maybe this is contributing to the improvement"

— Erica O. (4/5)

Q&A

Hi there! Curious the difference between the phyto and peptide booster as they seem to help with similar things? And if I wanted to try both would I layer them or alternate them?: Hi Cait, Both boosters help to support maturing skin. Our Peptides Booster contains amino acids which help to stimulate collagen and elastin to plump and smooth which results in fine lines being reduced and skin feeling firmer. Our Phytofill™ 1% Firming Booster is more of a quick fix to reduce the appearance of fine lines resulting in firmer, smoother skin. This concentrated oil targets the cause of wrinkles by temporarily relaxing the skin. If you would like to use them together, you can mix them into a serum or moisturiser in the evening. Pai Customer Experience Team
Hi cam I use this wit niacinamide, and matrixyl? is it safe to be used on rosacea skin? Is it better used morning or night?: Hi Sonia! Our Phytofill™ Booster is compatible with Niacinamide and Matrixyl and has been independently patch-tested to ensure suitability for sensitive skin. It can be used both morning and evening, but if you prefer to use it once a day we recommend using it in the evening. This will boost the natural repair process when your skin is the most relaxed. We hope this helps! Pai Customer Experience Team
Hi! Can this booster be used around the eyes? And is it best applied AM or PM? Since it's something that provides instant and temporary results, I guess it's not a product you need to use every day to see results, right? Would I apply it, say, in the evening if I want smoother lines the next day? Thanks in advance :): Hi Bee! Our Phytofill™ can be gently massaged along the orbital bone but we don't recommend applying directly beneath the eyes where the skin is very thin and delicate. It can be applied both morning and evening but if you prefer to use it once a day, we suggest applying in the evening as this will boost the natural repair process when your skin is the most relaxed. Our trials showed that 74% of participants found their skin looked smoother within 24 hours! We hope this helps! Pai Customer Experience Team
Hello, can I use Phytofill booster during the pregnancy?: Hi Vaitkute, You will be pleased to hear that Phytofill is safe to use during pregnancy. Customer Experience Team Member
Sounds like a good addition. Can you combine this new booster together with the Peptides booster in the evening.: Hi Jo, Thank you for getting in touch. You can mix the two boosters or if you prefer you can add Peptides to Serum and Phytofill to Moisturiser. Whatever feels comfortable for you. Customer Experience Team Member.

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