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Pai Skincare UK
  • Vegan
  • Powered By Green Chemistry
  • Cruelty Free
AGE CONFIDENCE
Phytofill™ 1% Firming Booster
Phytofill™ 1% Firming Booster
Phytofill 1% Firming Booster
Phytofill 1% Firming Booster
Phytofill 1% Firming Booster
Phytofill 1% Firming Booster

Phytofill™ 1% Firming Booster

Regular price £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.

Clinically Proven:

  • 69% agreed it reduced appearance of fine lines & wrinkles*
  • 81% agreed skin felt firmer*
  • 74% agreed skin looked smoother*
Learn more

Benefits:

  • Firming
  • Smoothes fine lines & wrinkles
  • Boosts elasticity

GUIDE TO LAYERING:

Step 1: Cleanser
Middlemist Seven Cream Cleanser

Middlemist Seven™ Cream Cleanser

Regular price £34.00
/ 150ml / 5.0 fl.oz
Step 2: Booster
Phytofill™ 1% Firming Booster

Phytofill™ 1% Firming Booster

Regular price £19.00
/ 10ml / 0.3 fl.oz
Step 3: Serum
Pai Skincare Serum Back to Life Jojoba & Hyaluronic Acid Hydration Serum

Back to Life™ Hyaluronic Acid Hydration Serum

Regular price £49.00
/ 30ml / 1.0 fl.oz

Add full routine - save 10%

Phytofill™ 1% Firming Booster

£19.00
Pai Skincare UK
Proven Results
  • 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

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.

  • Recommended for

    All skin types

  • Routine

    Day & Night

Pai Skincare UK
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.

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

Pai Skincare UK
How to Use

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.

Recycling

We do our bit so it’s easy for you to do yours. Check out our instructions on how to recycle Pai packaging.

Sarah Brown, Pai Founder

"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

Frequently Asked Questions

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: 4.6862745 / 5 from 102 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: ["smell","results","feels","booster","improvement","skin","looks","lines","consistency","bottle","irritation","difference","compliments","glow","addition","use","effect","buy","change","drops","pai","works","serum","make","friends","skincare"].

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

Loving both of these products,

"Loving both of these products, my skin shows signs of greater smoother- firmer skin , and glows! - I use them intermittently 2-3 a week during my nighttime routine. Thank Pai."

— Barbara B. (5/5)

Phytophill firming booster

"This is great . First time of using this , will definitely be ordering more. Skin feels amazing !"

— Helen M. (5/5)

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)

Really moisturising

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

— Adriana M. (5/5)

Skin feels tighter

"This has been a great addition to my routine. I mix it with my serum each night."

— Sarah C. (5/5)

Favourite Booster. . .

"Of all the boosters this is thr one I have repurchased the most. I think it does offer some benefits in plumping skin."

— Margaret F. (4/5)

It is effective for saggy skin

"After long hours work, my skin looks tired and smile lines are a little bit saggy. But after apply this product for several days, I noticed my smile lines look much better, and my skin looks younger. I normally only apply once a day (at night) and it’s enough to keep my skin look firm and healthier all day long."

— M S. (5/5)

Phytofill booster

"A couple of drops of this lovely serum helps my skin feel super smooth and hydrated the next day. I use the rose hip oil with a couple of drops of this."

— Debbie A. (5/5)

Phytofill™ 1% Firming Booster

"Early days using the product, but have noticed smoother skin in the morning after use at night."

— Gillian H. (4/5)

Q&A

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
Hello, This product looks great! I&#x27;d love to know if it is safe to use during pregnancy? Thanks.
Hi Aurelie, Thank you for getting in touch. Happy to inform you that Phytofill is safe to use during pregnancy. Customer Experience Team Member