
BeforeAfter↔Hair
Scalp care and fuller-looking hair.
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KING DIY LAB · SAN DIEGO
Ready-to-use serums, raw ingredients and tools for your next creation.
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Illustrative before & after examples — not actual customer results or a prediction of results.

BeforeAfter↔Scalp care and fuller-looking hair.
DIY or ready-made →
BeforeAfter↔Care for the appearance of fine lines.
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BeforeAfter↔Smoother, firmer-looking skin.
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BeforeAfter↔A brighter, more even-looking complexion.
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BeforeAfter↔Refresh the look of tired under-eyes.
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BeforeAfter↔Conditioning for a fuller-looking beard.
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BeforeAfter↔Hydration and smoother-looking body skin.
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BeforeAfter↔Comfort for dry-feeling skin.
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BeforeAfter↔Conditioning for lashes and brows.
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BeforeAfter↔Softer, smoother-looking skin.
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BeforeAfter↔Care for the appearance of pores.
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BeforeAfter↔Care for a dry-feeling scalp.
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Recipes, practical guides and step-by-step videos.
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Choose your products and quantities, then review your order.
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Swipe to explore · Tap a photo to enlarge. Instruction cards preserve G4 supplier wording; rolling steps and schedules do not apply to stamps. Supplier images may show other colors or variants; see the product description for what is included.
TOOLS & DEVICES
A tool for your lab or personal care routine.
Manufacturer-listed needle lengths: 0.25 mm and 0.5 mm. Please state your preferred length in your order note; availability will be confirmed before payment.
Elevate your skin rejuvenation and hair regrowth routine with the NEW Bio Roller G4 Microneedling for Skin and Hair Growth – a masterpiece of derma rolling tool forged by beauty therapists.
Read and follow the supplied manufacturer instructions before use.
For topical cosmetic use only. Patch test before first use.
1200 pins · 1 device / $18
Review your order →Original supplied wording, preserved as requested.
Elevate your skin rejuvenation and hair regrowth routine with the NEW Bio Roller G4 Microneedling for Skin and Hair Growth – a masterpiece of derma rolling tool forged by beauty therapists.
Designed with priority of user’s safety, wellness, and aesthetic aspiration in mind, the Bio Roller G4 Microneedling for Skin and Hair Growth redefines hygiene and efficacy in a derma rolling tool.
The Bio Roller G4 Microneedling for Skin and Hair Growth, meticulously designed to surpass industry benchmarks, redefines your expectations of how a derma roller would look like.
The premium roller features a head cover that also functions as a sanitation tank prior to usage. So you can get everything handy in one place!
Boasting an ensemble of 1,200 medical-grade stainless steel needles, Bio Roller G4 Microneedling for Skin and Hair Growth creates thousands of microchannels in one go. So your skin will produce even more new collagen and elastin fibres, a protein that helps with hair regrowth and cell renewal.
The microchannels can also increase blood circulation to the hair follicles, which delivers vital nutrients and oxygen to skin. This can help to nourish the skin, the hair and promote healthy hair growth.
Consistent derma rolling is also proven to help:
Facilitate skin exfoliation
Enhance the appearance of the skin
Achieve a smoother look and feel
Create a luminous glow for the skin
Stimulate hair regrowth
The Bio Roller G4 Microneedling for Skin and Hair Growth comes with two variant options: 0.25mm and 0.5mm microneedles. Both roller needles are non-invasive and suitable for at-home treatments.
The needles on the roller will target the outermost layers of your skin without feeling discomfort. So you can rejuvenate your skin in ways you never thought possible.
Clean your workspace thoroughly with an antiseptic or disinfectant wipe to ensure that it is free from germs and bacteria.
Wash your hands thoroughly with soap and water, and consider wearing gloves to avoid contamination.
Pour 70% isopropyl alcohol into a clean bowl or container.
Immerse the derma roller’s head (the needle part) into the alcohol.
Allow it to soak for 5-10 minutes to ensure thorough disinfection.
After soaking place it on a drying rack or stand to allow the needles to air dry completely.
Once the derma roller is completely dry it is now ready to use.
NOTE: Always sterilize your derma roller after every use to ensure that it is safe for your skin the next time you use it.
Begin by sanitising the Bio Roller with an alcohol solution of 70% before every use. This is to ensure safety.
Cleanse your skin with a cleanser of choice to remove all traces of dirt, sweat, and makeup.
Apply Femvy Hyaluronic Acid Serum onto the skin before rolling.
For the treatment area, delicately roll the derma roller back and forth in each direction (horizontally, vertically, and diagonally). Repeat this motion 5-10 times. Remember to lift the derma roller off your skin before changing the rolling direction.
Maintain a uniform speed and pressure for the best results.
Begin by sanitising the Bio Roller with an alcohol solution 70% before every use. This is to ensure safety.
Cleanse your targeted area with a cleanser of choice to remove all traces of dirt, sweat, and makeup.
Gently dampen and comb your beard before starting to prevent hair tangling.
Divide your beard into manageable sections, or focus on the visible patchy areas.
With a gentle touch, roll the derma roller horizontally, vertically, and diagonally across the targeted areas, performing 3-4 passes.
Temporary redness might occur, and you could experience a mild tingling sensation.
How often your derma roll depends on the length of needles you’ll be using. Below is a guide for each length:
0.25mm - suitable for daily use (make sure your skin is properly healed before the next use). Start by using the tool twice a week and gradually increase the frequency to daily use.
0.5 mm - once every 3 weeks
A sensation like a mild sunburn is normal and may last for 24 hours.
Please refrain from using skincare products containing aggressive exfoliating chemicals. Avoid scented products, glycolic acid, or alpha hydroxy acids (AHAs).
For consistent precision and safety (avoid cross-contamination), replace your derma roller either after 15 uses or after a span of 3 months. This ensures safety and effectiveness of your derma rolling treatment. Full sterilisation must be done before each use.
Make sure your skin is completely recovered before starting an
The final sentence in the supplied instructions is incomplete.
The premium roller features a head cover that also functions as a sanitation tank prior to usage. So you can get everything handy in one place!
U.S. shipping · FREE with FREESHIP150 on orders $150+ after discounts. Below $150: $15 with serums or a Home Lab Kit; $10 for other orders.
Optional extra shipping insurance · $2
KING DIY LAB · HOME LAB
Choose individual tools or save with the complete kit.

1 device
Adjustable-speed mixing for your cosmetic formulations. Beakers sold separately.
Photo shows the stirrer with both beakers. Each item is sold separately here.

1 kg / 0.1 g
Portable weighing with a protective lid and a clear digital display. 1 kg capacity; 0.1 g readability. Not suitable for measuring milligram peptide doses.

1 device
Check the pH of your water-based formulas. Calibration powders sold separately.

1 tray
Keep your small lab tools together on a reusable stainless steel tray.

3 powder packets
Three buffer powders: pH 4.00, 6.86 and 9.18. Prepare according to the packet instructions.

1 × 50 mL
A small graduated glass beaker for preparing and pouring cosmetic batches. One 50 mL beaker included.
Photo shows the stirrer with both beakers. Each item is sold separately here.

1 × 100 mL
A graduated glass beaker for mixing your cosmetic formulas. One 100 mL beaker included.
Photo shows the stirrer with both beakers. Each item is sold separately here.

3 sizes
Three stainless steel spatulas in different sizes for transferring cosmetic powders.
COMPLETE KIT OFFER
Eight selections. One complete kit.
Free U.S. shipping with code FREESHIP150 on orders $150+ after discounts; otherwise $15 for orders containing the kit.






IN DEVELOPMENT
New formulations and lab products are being prepared by KING DIY LAB.
Skin-conditioning peptide for cosmetic formulations.
Explore product →Our next-generation multi-molecular hyaluronic acid blend.
A new cosmetic peptide for hair and scalp formulations.
COMING SOONA coordinated kit with serum ampoules, single-use stamp heads and hydrating sheet masks.
View Dr. Pen product details ↗Mix & match any two 60 mL bottles. Pair savings apply to ready-to-use serums only.
Browse rollers, stamps, devices and replacement heads. Swipe through the photos to see each kit.
COMING TO KING DIY LAB
Explore upcoming skin care tools and kits.
COMING SOONA coordinated kit with serum ampoules, single-use stamp heads and hydrating sheet masks.
View Dr. Pen product details ↗Choose a pack quantity. Open a product card for its full description. For cosmetic formulation use only.
View full price listLEARN WITH KING DIY LAB
Follow King through preparing tools, weighing powder, measuring water, mixing, checking pH, bottling and applying a clear serum. 1 minute 7 seconds. Illustrative techniques, not a complete recipe.
Explore related guides →A short visual demonstration of weighing powder and preparing a hyaluronic acid base. Illustrative footage; consult a complete, verified formulation before mixing.
Explore related guides →A visual introduction to serum preparation and scalp application. Illustrative footage; consult a complete, verified formulation before mixing.
Explore related guides →King’s serum-mixing tutorial with formulation notes and lab tips.
Queen introduces Argireline, Matrixyl and SYN-AKE, with realistic expectations and routine tips.
Watch King’s complete 3D HA tutorial.
Queen introduces SNAP-8 and hyaluronic acid in this short ingredient video.

LAB EDUCATION
Watch ingredient guides and step-by-step mixing tutorials.

FOR DIY CUSTOMERS
Recipes, ingredient guides and formulation tools, together in one place.
Explore the DIY Lab →FORMULATION TOOL
Cosmetic topical formulation only. Confirm each ingredient’s supplier specification, solubility, pH range, preservation system, and recommended use level before making a product. Not for injection.