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Why Most Scalp Serums Never Reach Your Scalp
Thinning doesn't start at the ends. It starts at the scalp — under a layer of dry shampoo, styling product, oil and dead skin that blocks almost everything you put on top of it.
So you buy the serum. You squeeze the dropper, most of it lands on your hair instead of your skin, and the fraction that does reach the scalp can't get through the buildup. Six weeks later nothing has changed and you assume the product failed. It never got in.
Twist It On. Brush It Through. Walk Away.
Reedle Shot clears the path first. Microscopic spicules exfoliate the buildup and open micro-pathways so the vegan PDRN, ginseng and caffeine behind them actually absorb. The brush head parts your hair and puts the serum on your scalp, not in your lengths. Twist to ON, brush through damp or dry hair, massage for two minutes, twist to OFF. No rinsing, no residue, no waiting around.
Frequently Asked Questions
I've never used a scalp serum before. Is this actually easy?
I've never used a scalp serum before. Is this actually easy?
This was built for people who have never touched a scalp treatment. There is no rinsing, no waiting, and no technique to learn.
Twist the brush head to ON. Part your hair and drag the brush along your scalp, working in sections until you've covered the areas you care about. Massage with the bristles for a minute or two. Twist the head back to OFF. That's the whole routine — about two minutes, once a day.
Use it on a clean scalp, on damp hair straight out of the shower or on dry hair before bed. There is nothing to wash out, so it slots into the routine you already have instead of asking you to build a new one.
What is “liquid microneedling” — and does it hurt?
What is “liquid microneedling” — and does it hurt?
There are no needles in this product. Reedle Shot uses microscopic plant-derived spicules — tiny crystalline structures suspended in the liquid — that gently exfoliate the scalp surface as you brush them in.
What you feel is a light tingle and a strong cooling sensation, not a sting and not a scratch. Most people describe it as refreshing. In a consumer perception study of 50 participants, 98% agreed the scalp felt instantly cooled and 97% said it felt soothed and refreshed.
The point of the spicules is delivery. By clearing buildup and opening micro-pathways at the surface, they let the vegan PDRN, ginseng and caffeine absorb rather than sit on top of the skin. It is the same principle as in-clinic microneedling, delivered by a serum you use at home in two minutes with no downtime.
What's actually in it, and will it make my hair greasy?
What's actually in it, and will it make my hair greasy?
Three actives do the work. Microneedling spicules exfoliate scalp buildup and enhance delivery of everything behind them. Vegan PDRN with Korean wild ginseng extract revitalizes and strengthens the scalp environment. Caffeine helps support hair density and improves scalp circulation. Cica and Hyalon round out the formula for comfort and hydration.
No, it will not make your hair greasy. The texture is watery and lightweight rather than oily. It absorbs within a couple of minutes and leaves no film, no weight and no residue on your lengths — which is exactly why it works as a morning product and not just a wash-night one.
How long until I see a difference, and how long does a tube last?
How long until I see a difference, and how long does a tube last?
The cooling and the soothing are immediate — you will feel those the first night. Changes in how your hair looks take longer. In the consumer perception study, 95% noticed an improvement in hair thickness and strength after 4 weeks of use.
Use it once daily for best results. Consistency matters far more than quantity here; two minutes every night beats a heavy application twice a week.
One 100 mL (3.38 fl. oz.) tube runs roughly two months of nightly use on a full head of shoulder-length hair. For concentrated attention on a hairline or a specific thinning spot, pair it with the PDRN Reedle Shot Hair Ampoule 100/300/700 and alternate strengths.