Plastic flip-top cap for bottle 28/410, white

A plastic flip-top cap for bottles with a 28/410 neck thread is a closure designed for easy dispensing of liquid and semi-liquid products. It opens with a single thumb movement, the contents are pressed out through a small opening, and the lid snaps back shut — making it fully one-handed to use, even in the shower or at the sink. Ideal for products dispensed in small amounts and used frequently, from shampoos to body lotions.

The cap is made from polypropylene (PP), a lightweight and flexible plastic that withstands repeated hinge opening without cracking. The packaging material is suitable for use with cosmetic products and is also approved for direct food contact, so it can be used for household oils, syrups or dressings in a bottle with the same neck size.

Why choose a flip top

• One-handed dispensing – the lid flips open with the thumb and snaps shut after use; no unscrewing or setting the cap aside.
• Controlled amount – contents flow through a small opening rather than the full neck, making it easier to dispense into the palm and reducing waste.
• Protected opening – the closed lid shields the dispensing hole from dust and water, which is especially practical in the shower.
• No metal parts – the closure is made from a single plastic, with no spring or metal ball like pumps, so it will not jam or corrode.
• Neutral white – the opaque colour looks clean on both white and coloured bottles and does not highlight product residue around the opening.
• Durable material – polypropylene will not shatter on impact, does not absorb moisture and can be washed repeatedly.

Which products and bottles it suits

The flip top is intended for products fluid enough to be pressed through the opening, yet not so thin that they flow out on their own once the lid is open. It works best with shampoos, shower gels, liquid soaps, conditioners, body and cleansing milks or lighter gels. It can also be used with body and massage oils, though bear in mind that oil flows faster than gel and the dose will be larger.

It is less suitable for thick creams and butters that cannot be pushed through a small opening. For very thin water-based products such as tonics or facial waters, a spray pump or disc top provides more precise dispensing. It is not intended for spraying, nor as the sole seal for a bottle during extended transport.

The cap fits bottles with a 28/410 neck thread. Bottles with this neck and ready-made bottle-and-closure combinations are available in the Handymade range. When assembling your own combination, we recommend verifying the seal, dose size and closure behaviour with your specific formulation, as the same thread type does not guarantee identical fit across every bottle manufacturer.

Good to know

Before the first fill, it is recommended to wash the cap with warm water and a mild detergent, or to disinfect it with isopropyl alcohol or ethanol and allow it to dry completely. The same procedure applies when reusing the cap. At that point, check that the lid hinge is not cracked and that the lid still snaps firmly shut. Store caps in a dry, clean environment until filling.

Polypropylene resists the majority of cosmetic ingredients. With anhydrous products containing a high proportion of essential oils, fragrance compositions, or contents with solvents, we recommend verifying the closure's behaviour in the finished formulation — in particular, softening of the material or colour change with prolonged contact.

The lid snaps shut firmly, but under greater pressure in luggage it may open. For travel, we recommend placing the bottle in a resealable bag. The closure is made from a single type of plastic and, once washed, belongs in the sorted plastic waste stream.

Frequently asked questions