Booster Discovery Kit

Want to take your skincare up a notch? You're in the right place. The kit pulls together three of our bestselling concentrated boosters, all suitable for every skin type, tackling hydration, brightness, and firmness through three distinct mechanisms. Add 1–2 drops to your moisturizer to fine-tune your routine in seconds, no overhaul needed. Stabilized Vitamin C 20% handles brightness and protection through an oil-soluble form that your skin takes up 10x faster than conventional vitamin C. Hyaluronic Acid 0.3% combines three molecular weights in a single formula, working both at the skin's surface and further down into the epidermis. Peptides 5% teams a signal peptide with a substrate peptide to drive collagen and elastin synthesis, smoothing fine lines and firming the skin. Every one of the three is fragrance-free, free from essential oils, and 96-hour patch tested, which makes them safe even for reactive skin types. Mix and match: one at a time, or all three at once in your palm. One moisturizer, three different outcomes. Why You'll Love It Directions Full Ingredients Recycling How do the boosters in this kit actually work? Each booster is a concentrated single-active serum. You add 1–2 drops into your existing moisturiser, mix in your palm, and apply as normal. No new steps, no routine overhaul. You can use one at a time or combine all three in the same application. Can I mix these boosters with any moisturiser, or only Pai moisturisers? You can mix them into any moisturiser you already use. The booster format is designed so the active is delivered through your moisturiser's base, so there's no need to switch products. That said, Pai's Chamomile & Rosehip Calming Day Cream is a particularly good match if you're looking for a sensitive-skin-friendly base. When should I use each booster in my routine? Vitamin C works best in the morning for daytime antioxidant protection. Hyaluronic Acid suits both morning and evening. Peptides can be used morning and evening, or evenings only, and it's also suitable around the eye area. Is this kit suitable for sensitive skin? Yes. All three boosters are fragrance-free, essential oil-free, and have undergone 96-hour human repeat insult patch testing, which goes beyond standard industry requirements. The Vitamin C is oil-soluble, so it causes none of the pH-related irritation that water-soluble vitamin C at high concentrations is known for. Can I use these boosters during pregnancy or breastfeeding? Yes. All three boosters in the kit are confirmed safe for use during pregnancy and breastfeeding. They contain no retinoids, no essential oils, and no ingredients flagged for concern during this period. How do the three boosters work together for ageing skin? Pai's lead chemist recommends Peptides paired with Hyaluronic Acid as the standout combination for ageing skin, combining collagen renewal with deep multi-layer hydration. Adding Vitamin C extends the benefit to tone correction and sustained free-radical defence. All three can be mixed together into a single application of moisturiser. What certifications do these boosters hold? The Vitamin C booster is COSMOS Organic certified by the Soil Association, while the Hyaluronic Acid and Peptides boosters are COSMOS Natural certified. All three are Vegan Society registered, Leaping Bunny cruelty-free approved, and formulated in Pai's London lab. Every ingredient, including the actives themselves, is naturally derived: the hyaluronic acid comes from bacterial fermentation of maize glucose, the vitamin C from corn, and the peptides from yeast and Lactobacillus fermentation. What clinical evidence supports the actives in these boosters? The Vitamin C booster uses ascorbyl tetraisopalmitate, which skin cells absorb at roughly 10x the concentration of L-ascorbic acid, retaining it 40–80x longer. In three double-blind, placebo-controlled, split-face trials (23 subjects each, 8 weeks), concentrations of just 1–3% significantly reduced periorbital wrinkles versus placebo. The Peptides booster's Hexapeptide-11 delivered measurable elasticity improvements in a 4-week in vivo study of 25 volunteers (Sklirou et al., Redox Biology, 2015). Published research on the Hyaluronic Acid booster's multi-weight approach (JCAD, 2024) confirms that combining high, medium, and low molecular weights produces greater total hydration and lower water loss than any single weight alone. What makes the Booster Discovery Kit different from other skincare starter sets? Most kits give you diluted sample sizes or products that all target the same concern differently. This kit contains three full-concentration boosters that each address a biologically distinct mechanism: multi-depth hydration, oxidative defence and pigmentation control, and structural protein renewal. They're designed to complement each other, not compete, and every active is naturally derived and COSMOS certified. Want to take your skincare up a notch? You're in the right place. The kit pulls together three of our bestselling concentrated boosters, all suitable for every skin type, tackling hydration, brightness, and firmness through three distinct mechanisms. Add 1–2 drops to your moisturizer to fine-tune your routine in seconds, no overhaul needed. Stabilized Vitamin C 20% handles brightness and protection through an oil-soluble form that your skin takes up 10x faster than conventional vitamin C. Hyaluronic Acid 0.3% combines three molecular weights in a single formula, working both at the skin's surface and further down into the epidermis. Peptides 5% teams a signal peptide with a substrate peptide to drive collagen and elastin synthesis, smoothing fine lines and firming the skin. Every one of the three is fragrance-free, free from essential oils, and 96-hour patch tested, which makes them safe even for reactive skin types. Mix and match: one at a time, or all three at once in your palm. One moisturizer, three different outcomes. Add 1–2 drops of any booster to your moisturizer, mix in your palm, and apply as usual. That's it. Use one at a time, or blend all three for the full lineup. Hyaluronic Acid 0.3% — Morning and evening. Your hydration foundation. Stabilized Vitamin C 20% — Best in the morning, when your skin can put its antioxidant protection to work. Evening's fine too. Peptides 5% — Morning and evening, or evenings only. Gentle enough for the eye area. Our favorite combination? All three, blended into a single moisturizer. Each active targets a completely different skin mechanism, so they don't compete. They just do their thing. Stabilised Vitamin C 20% Brightening Booster Helianthus Annuus Seed Oil* (sunflower oil), Ascorbyl Tetraisopalmitate, Coconut Alkanes, Opuntia Ficus-indica Seed Oil (prickly pear seed oil), Heptyl Undecylenate, Vaccinium Myrtillus Seed Oil (bilberry), Tocopherol* (vitamin e). 63.8% Organic (of total, minus water and minerals) / 100% natural origin. *Organic Hyaluronic Acid 0.3% Hydrating Booster Aqua (water), Glycerin, Hydrolyzed Glycosaminoglycans, Pentylene Glycol, Persea Gratissima Oil* (avocado oil), Coconut Alkanes, Xanthan Gum, Vaccinium Myrtillus Seed Oil (bilberry), Inulin, Sodium Stearoyl Lactylate, Caprylyl Glycol, Sodium Hyaluronate, Tapioca Starch, Fructose, Tocopherol* (vitamin e), Algin, Hyaluronic Acid, Lactic Acid. 100% natural origin. *Organic Peptides 5% Smoothing Booster Aqua (water), Pentylene Glycol, Pisum Sativum Peptide (pea), Glycerin, Xanthan Gum, Cellulose, Hexapeptide-11, Leuconostoc/radish Root Ferment Filtrate, Sodium Hydroxide, Sodium Phytate, Glyceryl Caprylate, Tocopherol* (vitamin e). 99.99% natural origin. *Organic Say no to landfill! Let's recycle everything! - Sarah Each booster comes in a glass bottle with a dropper and glass pipette. Unscrew the dropper and remove it from the bottle. Gently pull the glass pipette out of the dropper. Rinse the glass bottle and pipette, then place them in your curbside recycling. The dropper and rubber bulb are not curbside recyclable. All Pai boxes, cartons, sleeves and inserts can be recycled with your curbside paper recycling. Some product components are not currently curbside recyclable in most US programs. We are working on a US-specific recycling solution. In the meantime, check what your local recycling provider accepts at earth911.com . Key Ingredients Stabilised Vitamin C Our all-natural Vitamin C is sourced from corn and coconut. It’s oil-soluble and stabilised to ensure it’s slow-releasing, delivering radiant results right down to the last drop. Hyaluronic Acid A sugar the body naturally produces, Hyaluronic Acid can hold between 10 and 50 times its weight in water, storing it like a reservoir for the skin – giving a long-lasting, moisturising effect. Our all-natural form comes from maize. Peptides If plump, bouncy, youthful skin is your goal, this one’s for you. Peptides are clever amino acids best known for stimulating collagen and elastin - meaning fewer lines and firmer skin. Ours is all-natural: yeast-derived Hexapeptide joins the humble yet hardworking Pea Peptide, rich in lysine to support healthy skin. View full ingredients list Mandi G. Verified Buyer Published date 21/07/26 Julie O. Verified Buyer Published date 03/06/26 Ana A. Verified Buyer Published date 10/05/26 Zoe L. 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